I've got 2 bricks of Thunderbolts .22lr that I would like to trade for Winchester 777 / #209 / #10 black powder caps. I don't know for sure what these caps go for. I just bought the .22lr for 16.90 at Bi-mart. I'd trade for an equal, current Bi-Mart price amount of caps. Sorry, the ammo is NOT for sale, trade for percussion #209/ #10 caps only!