My dad turned me on to these:
Studio 35 Men's Disposable Five-Blade Razors | Walgreens
Besides Walgreens they're also sold at CVS, Family Dollar, and Dollar General. The packaging is slightly different at each place, but they're the same, exact razors. Of the the 4 stores, CVS is the most expensive by far, followed by Walgreens. FD and DG are about tied for the best price.
The razors have 5 blades w/ a lubricating strip, plus a very handy sideburn trimmer blade; they're basically a knock-off of a Gillette Fusion disposable but way cheaper. At my local FD a 3 pack is $5 vs. $9 for 2 Gillette Fusion disposables. I don't know who in the heck is dropping $9 on 2 disposables, but somebody must be doing it.
FD and DG also sell a cartridge version of it, and that's an even better deal: A handle and 4 cartridges for $5.50. It looks slightly different than the disposable version (no orange on the handle), but it's the same thing. Gives a fantastic shave.
This short video also shows a quick, easy way to extend the life of a disposable razor using nothing but a scrap of denim.
http://www.youtube.com/watch?v=h-4bhVpfxJM