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nepundo: You don't really need any advanced math. It can be done easily in a spreadsheet if you know your data points: http://www.statisticshowto.com/how-to-find-the-area-under-a-curve-in-microsoft-excel/ (Could be done as easily in Google Sheets and it would be online.)

Anyway I'm not saying "let's go ask everybody and find the exact figure". That's probably a lot of work and probably you're not that curious? I'm just saying that it could be done if somebody is really curious.

In the end it's what Thyrria has shown, but automated in case there are lots of data points, and a bit more accurate because it uses an average value for each interval instead of the lowest one.
That's interesting to know :)

What I'm really curious about is how many copies of different games sell on Gog, but as that's harder to work out from the data available I'll make do with a rough idea of how much they're turning over :)


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Tyrrhia: I meant no disrespect. It's just that an average means a potentially super wrong, potentially accurate estimate.

For example: Let's take this situation where five people spent a certain amount: $100, $0, $0, $0, $0. If you make an average of the two extreme values, you will get $50. So, by only using the average, it would mean that the total spent was $250. That's way less than the actual amount, $100.

Of course, my method isn't accurate, either. But it gives a minimum value: it shouldn't drop below that amount, but it could be way higher. I chose this method to not get a high amount in which we could be disappointed once we know the actual amount (if we ever do).
It's ok, I wasn't offended. I was just saying that my very rough estimate was way off your much more considered one :)

I think in this case as well the high points (the top 10) are probably far above the actual average spend. If you dropped out of the top 100 or 200 you're probably getting closer to a more normal spend.

At a guess (based on how much I'd imagine people are spending) I would say the average is likely to be maybe $30 per person, which isn't far off what you'd calculated
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Tyrrhia: What do you mean by arbitrary ranks? I mean, they were all taken from posts within this thread and the official summer sale thread. How can you calculate the sales without data?

Or maybe I'm misunderstanding what you're saying. It's been a long while since my math days, and even then, I learned them in French, I don't know the English terms, except for the super easy stuff. :(
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nepundo: Oh no, my bad. I missed the part where you said that "I chose not to link to the posts I used as references", meaning you actually got the data from different posts, and I thought it was just a fictional example you were using to illustrate your method. Sorry.

Still, I'm a bit confused. Are your XP intervals right or I'm reading it wrong again? For example, in the first interval, 26,000 - 22,000 users, the final XP shouldn't be 16,000, which is the start of the next interval? Not that it matters much, because I see you use the same floor value (the left one) for a whole interval, but just to agree on everything.

Also, it might be that I'm the one using the completely wrong English terms, so don't think it's your fault if there's a misunderstanding :-D
Ah, OK. Nah, if I had taken fictional values, I would have found a much higher value at the end. ;)

I think the XP intervals are right. Users around rank 26,000 should have a final XP of at least 14,000 (what adaliabooks said in the first post); and users around rank 22,000 should have a final XP of at least 21,000 (what Maxvorstadt said in the second post). Just add 5,000 XP to everything and you should get the final amount.

Edit. Maybe you got confused because of yet another simple mistake? I wrote "26,000 - 22,000 users who amassed more than 9,000 XP but less than 97,000 XP," but it obviously should be 16,000 XP. I hate copy-pasting, but it's so convenient!

And I'm glad I'm not the only one not really understanding English math stuff . . . or, rather, sad for both of us. :P
Post edited June 22, 2016 by Tyrrhia
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Tyrrhia: I meant no disrespect. It's just that an average means a potentially super wrong, potentially accurate estimate.

For example: Let's take this situation where five people spent a certain amount: $100, $0, $0, $0, $0. If you make an average of the two extreme values, you will get $50. So, by only using the average, it would mean that the total spent was $250. That's way less than the actual amount, $100.

Of course, my method isn't accurate, either. But it gives a minimum value: it shouldn't drop below that amount, but it could be way higher. I chose this method to not get a high amount in which we could be disappointed once we know the actual amount (if we ever do).
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adaliabooks: It's ok, I wasn't offended. I was just saying that my very rough estimate was way off your much more considered one :)

I think in this case as well the high points (the top 10) are probably far above the actual average spend. If you dropped out of the top 100 or 200 you're probably getting closer to a more normal spend.

At a guess (based on how much I'd imagine people are spending) I would say the average is likely to be maybe $30 per person, which isn't far off what you'd calculated
Oh. Well, here's another misunderstanding of mine. I thought you meant that my answer was ten times as worse as yours. I read it in a totally wrong setting, kind of like "Dare speak to me again. You're nothing to me." Sorry! :\

I didn't even calculate the average, but yeah, $30 seems like a reasonable one. The top values often weigh far more heavily than the rest. You can go as high as you want, but you can't go below zero, so they can't really be nulled.
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Tyrrhia: snip
You forgot to take into account any money GOG may have paid to the developers of Spelunky, Gabriel 20th and Dreamfall Chapters. These kind of freebies are typically not given away out of the goodness of the devs' hearts.

Coming up with a remotely accurate number is near impossible with all the factors combined.
Post edited June 22, 2016 by mistermumbles
CD Projekt is publicly traded so just wait until the next quarter and read their financials if you want a general idea.
GOG makes money? Those greedy bastards!
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adaliabooks: ...
And in conclusion, I'm clearly in the wrong business XD
I wonder how difficult it is to open an online games store....
Ask Desura about that. :) I love math and like your way of thinking about this. :)
Post edited June 23, 2016 by skeletonbow
Just as a reference, Age of Decadence roughly doubled its number of copies sold here during this sale according to its dev.
I was amused to see that there were a couple people who spent like $2500 on the sale. That's... quite a bit.

I dropped $100 or so. Not that much, but probably on the high end of the spectrum.
This thread piqued my interest so here is my info if it helps.
I earned all badges, spent $221.64 which got me 227570 XP and my current rank is #353.
I spent $230 and got 231870xp (without any badges nor anything like that but the automatic one) and ended up #335.

(With that same xp I was #258 on tuesday, so that was quite a drop for the last day of the sale)
Post edited June 23, 2016 by rgnrk
I got 100450 exp and ranked 2089. Spend around $90. Hope that helps for the sake of this exercise.
is there a way to check where one was. i spent 13 aud on bloodlines. but i don't i was opt in.
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paladin181: I got 100450 exp and ranked 2089. Spend around $90. Hope that helps for the sake of this exercise.
Hard to measure. So the dude who got the throphy spent what? Probably a ton! ;D
I've added a level of data, thanks to some previous posts.

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Tyrrhia: snip
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mistermumbles: You forgot to take into account any money GOG may have paid to the developers of Spelunky, Gabriel 20th and Dreamfall Chapters. These kind of freebies are typically not given away out of the goodness of the devs' hearts.

Coming up with a remotely accurate number is near impossible with all the factors combined.
Oh, I agree. I'm just providing a minimal estimate of what was spent during this sale (by users who opted-in). Getting a really accurate number of what they've made during this sale would require factors that are not available to simple users: refunds, Fair Price packages, deals with the publishers and even taxes, probably. It's simply beyond our scope.