I'm in no wise a pepper seed collector specialist. I've failed at collection of good seed many times, others have also. This is why you have bought bad seeds in the past, at times. Stay in there, and don't give up. . Below is a picture of 148 pepper plants. If you check East TN's weather, you will know why they aren't in the ground already. There is 18 varieties in there. And only 2 of them is from store bought seeds. Its because I've ran out of that variety. The rest are from my collected seeds.

I think Peter piper will have his work cut out picking and pickling all those beauties

They look like beautiful transplants. How do you start your seeds? Do you have any tricks for old pepper seeds?