This one is almost too good to be true...
You can upgrade from Photoshop Elements to Photoshop CS3 for only $299. For those of you math geniuses... yes its cheaper to buy Elements, then upgrade, then buying Photoshop outright.
Click here for the offer.
"An offer this good doesn’t last forever. Move up online at the Adobe Store by 2/29/08.
To order by phone, call 1-800-585-0774 and mention offer code 27105. Have your Adobe Photoshop Elements serial code ready for verification."