Hi there!
It's been a few days after the launch of Super Jigsaw Puzzle: Generations. Throughout this time we have been studying the behavior of our players and have found that the price in game coins to unlock the puzzles it's probably too high, and could be a bit frustrating for some people.
With the last update we have reduce that price to the half, from 3000 to 1500 coins. All those who have already unlocked any puzzle will receive the difference back in their coin account.
We hope you like this change.
Thanks for playing!