New oyster delivery service Oyster Harem claims to source its seafood fresh from Surat Thani every two days. 

A standard order will set you back B400 for five palm-sized oysters, bundled with spicy oyster and seafood sauces.

Orders can be made via LINE (tob_tob_chunsri) or 092-962-2911, and delivery throughout Bangkok starts at B60.