I bought a grip safety that was advertised as US surplus. It was described as dark gray phosphated & not cheap cast parts. When it arrived it was black & the cast seam is clearly visible under the tang; the more visible surface is crudely sanded. This obviously is a cheap reproduction from overseas and not US surplus. I emailed them about a return, but they haven’t responded yet (it has only been a day).Welcome, Wayne...
I've never bought anything from them, but their prices don't look horrible for a place that appears to buy comm block stuff, strip it and sell it piecemeal. Shipping seems a bit more reasonable than a few of the bigger better known places.
They're in Commiefornia, so be aware of that in case they ask for payment in pesos or bitcoin.
They don't have anything I want/need, but nothing pricked up my ears as a potential problem.
You said "before I waste any more money with them" have you had problems with them in the past?
Best of luck.