Hi

Why the hell regular Panzer Coprs is not available anymore?
Only Gold edition.
Does this mean that I cannot buy grand campaign anymore unless I buy gold edition and pay again for the content that I have already?

Yep, seems so. :/

There was a sale of PC1 DLCs some week ago because of this, before they remove them.

Well, poor excuse. You miss it you loose it.
I do not follow every news about games. I got other hobbies also you know. ;)
There should be some discount for customers that bought something ealier.

According to the Slitherine forums, PC Gold is identical to PC1 with all the DLCs included.

Yeah.

I'm impressed how Slitherine apply draconian commercial practices.

It start with over the roof prices, adds a tons of expensive DLCs... you are midway buying them and then... puff.

They disappear for a 20£ (discounted) gold edition.

I'll never buy anything else from them, if not Gold edition and heavily discounted.

The Gold Edition should also be shown as owned to people who own the base game and all DLC but it doesn't :(

That is a really dirty tactic... I can appreciate them consolidating the game for new customers, but this is a dirty act for someone who has already bought in...

Is there anything in the Gold edtion that wasn't available as DLC on GOG before its arrival or is it just all the old DLC bundled with the base game?

Official Slitherine answer:
"If you already own all of Panzer Corps DLCs, you don't miss anything from not owning Panzer Corps Gold."