I have been using the flat rare priority box that includes a tracking number. The cost is actually $5.80. I'm sorry you feel that way. Please don't feel obligated to bid.
I bid on these. Have you thought of using the USPS boxes that "if it fits it ships". It would reduce $ for shipping. Just don't know if has tracking #. :-)
I am using the USPS flat rate box. The smallest one is $5.80. The cheapest envelope is $5.95 and I was afraid the buttons might be damaged if I put them in the padded envelope. Thanks for bidding.