T•chka (Rebranded as Point Marketplace_ allows you to buy and sell your stuff instantly. And you don’t have to communicate with other party at all. Buy or sell coordinates of your buried treasures. Finalize the trade only if you are satisfied with your purchase, or get your money back otherwise. Rate & review your purchases and sellers.
Tochka is now a referral market – a referral is included in the market url above.