More than 350 grateful Dead tapes (Portland)

I have more than 350 Dead tapes in excellent condition with cover and all either 2nd or 3rd gen tapes of some of the best music ever played on earth. I am really hesitant to sell these tapes for money so I am really interested in barter or...?? Let me know what you might think and run it by me. I guess if I had to price them I could only think that I could charge someone for the tape cassette and time so a buck ea ??