In Seattle, you can buy sunscreen in strengths from SPF 4 to SPF 45, and the drug store shelves are always well stocked (because, who would buy sunscreen in Seattle?). I just visited a drug store down here, and all the SPF 30 sun block was gone (why bother with anything less?), plus the store had "high-end" sunscreen -- SPF 48 and SPF 70. For when you need to be outside for a few minutes anytime after 9am or before 7pm. Heh.