So there's a pretty great deal right on both RPG Maker XP and VX Ace. Both engines are 80% off.
On top of that, you can use this voucher code to get an additional 25% off.
RPG Maker VX Ace $13.99 (With voucher $10.49)
http://www.bundlestars.com/store/rpg-maker-vx-ace/
RPG Maker XP $4.99 (With Voucher $3.74)
http://www.bundlestars.com/store/rpg-maker-xp/
I know the majority of the users here are XP users and if you don't own a copy of XP, now's your chance to get it dirt cheap.
I want to thank you for information about sale and voucher, since i yesterday decided to buy rpg maker vx ace and move my project to Ace, thanks to your offer i get it ~ 60 % off