I have new and used razors that take Trac II and Atra blades, from Gillette, Dorco, and Schick. If anyone is interested, I'll figure out prices.
Here are new Gillette Atra and Trac II's I'm selling on eBay:
https://www.ebay.com/itm/273467933182
https://www.ebay.com/itm/273431970897
https://www.ebay.com/itm/273366756606
Used ones and non-Gillettes would cost a lot less. For instance, I have a trial Atra with a plastic handle in the original (opened) box. That would be about $10.