No, sorry. Thirsties does not have a Buy/Sell/Trade page. We only deal in new diapers! There are, however, many sites that do.
Below are some sites to lead you in the right direction:
Sites for selling:
Many of our retailers also sell used diapers. If you are a retailer and sell used diapers, please feel free to post your link!
If you have questions, please send me an email to firstname.lastname@example.org.