Cover Girl makes CG Smoothers SPF 15 Tinted Moisturizer, which costs about $7... I bought the wrong shade, which I only used once. Depending on what skin tone you are, I can let you try it if you want. I bought Light-to-Medium, which isn't very dark at all... It comes in Fair-to-Light, Light-to-Medium, Medium-to-Dark and Deep... Color swatches are below... (Sorry, they're not bigger)
I use Stila Sheer Color Tinted Moisturizer which has an SPF 15. Laura Mercier's Tinted Moisturizers have SPF 20, and Bobbi Brown Tinted Moisturizer has SPF 15.
Both Bobbi Brown & Stila also over sunscreens which can be used in conjunction w/ foundations, powders, etc. Stila offers it on both SPF 30 and SPF 50, and it doubles as a primer/moisturizer.
FYI, I'm not sure how many people know this or not, but using two SPF products with different "coverage" doesn't mean you're doubling your SPF factor. Whichever product you use that has the higher SPF will be the max amount you receive... Although, using two different levels can possibly lengthen the amount of time the SPF lasts. I've read this on both the Cosmetics Cop site as well as the Oil of Olay site... Just thought I'd get that out...