I need help please... it seems like i am not getting RP for selling in marketplace listed in dashboard since wipe!

(Like in HWS Guide descriped Engineer Origin it should be “10 RP for an HWS Marketplace item purchased by a player from a different Origin player”)

please tell me how its calculationg…

as far as i understand i should get RP 10 if someone buys a item (not engineer) … but what does it mean? any amount? what if i post 10 stone and ten peaploe buy one stone? … please clarify
thx