I can't speak to the supermarket prices as I don't live in Florida, but the seller Suzanne Greene sent out an email saying she will be taking orders for Lychees and that she had a good crop. 11 a lb. Not affliated with her, just bought an airlayer once, and still get those emails each year, and some of you may be interested.
I can get good quality Lychee at the asian groceries here, usually for less than 6 a lb. It may not be picked 30 minutes ago, but tasty and enough for my little summer craving.