I just found a great deal for you.

It's the Canon SD450:



It is being offered by Crutchfield

List price: $339.99
Price break: -$40.00
Promo: -$50.00 (Promo code # PA440)
Net price delivered: $249.99*
* Includes free shipping and a free camera case

The great thing about ordering from Crutchfield, is that they offer a 30 money back guarantee

This is an awesome camera for the price, and will do just fine for blowing up to 8x10's