I am not sure why I want these but would like to complete my snap on wrenches. I am missing an 11,12,13,14,18, 25,27,28. Would be interested in single wrenches or multiple. Would also be willing to work out trades for any of my parts of course.

My buddy buys replacement snap-on, on eBay. Not cheap but it seems to work for him.

Been buying second hand Snap on stuff in the recent weeks. As mentioned, eBay, offerup, cragslist so-so, swap meet. I also got my 1/4 and 3/8 pristine ratchets in pawn shop (from an add either on CL or Offerup).
There are deals to be made but you have to regularly check and be patient.
Enjoy the hunt!

I find really good deals on small hand tools here. Most of the time these sales are handled by ladies that don't know much about tools. Punch in your location.
https://www.estatesales.net/CA/Palm-Springs/92264/2546331