Easy-Bake Ultimate Oven, Purple, is only $29.96. This is the lowest price around according to deal sites.  The Ultimate Oven works with a heating element, not lightbulb,

Classic Easy-Bake oven comes with a delicious chocolate chip cookie mix
Includes baking pan and pan tool
Make all kinds of treats with your oven (other mixes sold separately)
Oven comes with baking pan, pan tool, chocolate chip cookie mix and instructions

Baking with Mommy Cookbook: Recipes for Kid-Size Ovens – 10th Anniversary Edition.  And worried that the cost of those mixes will make you miss a mortgage payment?  Get this spiral-bound book of recipes for both kid and lightbulb ovens.  Good reviews, too.