I have a box of at least 900 lyman .30 cal gas checks for sale. I didnt count them ,but as you can see in the pic. its almost full. I would be surprised if there are 100 gone. They are selling for around 40.00 a box now. I will take 25.00 shipped in a flat rate box priority usps. Im shooting 357 mag now, so I would also trade for hornady 357 gas checks or 357 brass.