Reddit mentions of 100 12x15.5 White Poly MAILERS ENVELOPES Bags 12 x 15.5

Where are you located and how many do you need? We designed our own box that fits an Ultimate disc perfectly and have them manufactured at a local box company. You can have some if you happen to be close enough to pick them up.

For shipping USPS will be cheapest. I hadn't heard of shipping a disc without packaging, but sounds awesome, ha! If you're not worried about bending I'd recommend at least put a poly bag around them to avoid scuffing. USPS can be pretty rough with packages, so we always ship a disc in a box. Some postal workers like to try to jam discs in mailboxes, so if you go the poly bag route, at least write "Do Not Bend" on the package.

If you sell them I wouldn’t worry about boxes. They’re plush so I recommend these envelopes:

100 12x15.5 WHITE POLY MAILERS... https://www.amazon.com/dp/B000HG8720?ref=yo_pop_ma_swf

I put my sealed panties in these: 100 12x15.5 WHITE POLY MAILERS ENVELOPES BAGS 12 x 15.5 https://www.amazon.com/dp/B000HG8720/ref=cm_sw_r_other_apa_XvICxbD9VMK7M

Then put that inside a priority envelope that's free at the post office

You can ship items less than 1 lb using first class mail. Buying postage through eBay means it will cost around $2.60-3.60 to send an item first class. Priority mail flat rate envelope would be $5.75 and a padded flat rate envelope would be $6.10 when you buy through eBay. I bought [these] (http://www.amazon.com/gp/product/B000HG8720?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00) polybags for shipping clothing which run around 0.10 each. They're large enough they fit almost anything and if something is smaller you can wrap it around the item a couple of times. You definitely want a combo of both polybags for first class shipping and flat rate envelopes for anything for 1lb or greater.