So you guys think that by raising the price, people are more interested?

so what is a fair price then? ambages sells for 10 US dollars (roughly 8 euros) and grutns for 5 and mosnters for 2. i could raise the price to 7 dollars for grunts and maybe 5 for monsters?
i think it would be unfair to charge more than 10 dollars for ambages, although suggested price from the publisher (who never does anything with the game, a shame) would be 15 dollars...