Couple of issues- 1) how does one get accepted into the facebook trading groups so that they can post there?
2) how does the trading work? who sends first? last time I saw this asked it seemed to have been answered by pm, was there a reason not to just answer in a regular post?
Side note- if anyone can clarify the how-to for me, currently trying to sell these

:
Positron Clouder
Flux Probe x2
Quantum flare