You are right, my numbers ARE off a little. I paid 11.16¢ each for the bubble mailers and not 10¢ as I wrote in the original post.
Ebay item=380048116189 if you want to look at the seller.
Interesting enough I paid MORE to have the bubble mailers shipped than I did for the actual mailers. The bubble mailers were $12.95 for 250 of them and I paid $14.95 to have them shipped. Strangeley enough, I took the TOTAL cost into consideration when I placed my bid.