I've just sent my entry and would love to echo everyone else's appreciation for this competition.
Skystrider: Gold winners will also receive 22$ worth of GOG games of their choice (either 2x 9.99$ games, or 1x 9.99$ game + 1x 5.99$ game + The Witcher 1, or 3x 5.99$ games).
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Silver winners get 22$ worth of GOG games of their choice (again, either 2x 9.99$ games, or 1x 9.99$ game + 1x 5.99$ game + The Witcher 1, or 3x 5.99$ games).
I hope it's not considered rude to point this out but I wondered if there was an omission after you updated the prize amounts. You seem to be missing the possible combination of 1x9.99 + 2*5.99 games (=$21.97).