Some of those prices....wow. Here locally it didn't seem that bad as far as prices..just supply. Stripped lowers were about $110 as opposed to $90 pre-panic. Some ammo got outrageous. Spam cans of 7.62x54R were selling for about $80 at local shows pre-panic and afterwards they were $150, so that was a little ridiculous. 5.56 ammo of course skyrocketed (well over $1 per round around here, and not for premium ammo), but it didn't bother me because I was reloading all mine. I do remember mags got ridiculously expensive though. I bought a bunch before the panic so it didn't bother me, but I remember seeing mags for $50-$60 that were previously $15.
My main problem was finding stuff. I was building an AR right in the middle of the panic and it took me forever to get parts. Most stuff was backordered for weeks. I had a BCG on backorder that took 4 months to come in. Reloading components were the only thing that really hurt me. I couldn't find them anywhere, especially powder and primers. I STILL can't find VARGET powder anywhere around here. Before the panic, it was everywhere.
However, I did get offered ridiculous prices for the first AR I built, which was just a basic AR. Got several offers of around $1600, which is almost triple what it cost me to build. I didn't sell it because....well, I don't sell anything but that one specifically has sentimental value.
I learned my lesson. I'm buying spare parts and stocking up on ammo and reloading supplies so I can weather the next panic and still be able to shoot.