I've bought items recently from two POTN members who had (at the time) VERY low post counts ie single figures. Both of them were a pleasure to deal with and contacted me by phone to discuss details which was most reassuring. I met both in person to view and exchange cash and both items were exactly as advertised.
I bought a 17-40 F4L from Chris L
and a 20d from Ribel who deserves an extra "round of applause" for travelling much further than half way to meet me half way if you know what I mean.
Buy from these guys with confidence.