I've bought from Curt and have been very pleased!

There are many people with websites that also post here items for sale here, but here are two more ideas that might help.

Each day you could post a chip for sale, then reply to your own original post, other chips, creating a thread with several replies instead of several separate post.

You could also do like Fran Betker does. She post around the same time most days and does 3 or 4 post per day. It creates interest and I look forward to her post!