@Gepard you're not the only one who sees something off about it.
I don't consider for a moment buying from a forum member that hasn't been active. While I get that for some people that's the reason they join up, it's a risk I won't take.
In regards pricing, I'm sure some people don't see how much they can buy things at retail for, forgetting that Google is your friend (at least for this 😉 ).