As much as you like! On our site you can set your own price and charge for additional services, our active members sell on average 3-4 pairs a month as long as they promote via social media.
Our sellers are asked to package your item in discreet packing with no mention of our website or what is inside, we also delete your information once the package has been delivered.
We aren't currently supporting custom requests because additional services can be purchased but this is something we are looking at adding in the future.