Drumlin Farms had them this past Saturday at the Union Square Market in Somerville. If last year was any guide they carried them for a few weeks and the woman told me this was the second week they had them on sale this year.
I did! Similar to Striper's preparation, prosciutto, cheese, battered and fried. Reheated gently in the toaster oven. I think I paid ~$10 for 4 of them. Lots of other goodies, manicotti, stuffed eggplant, on and on... :)