Finally ordered all the parts. Finding stuff that wasn't on the slow boat from china proved a challenge with the scart connectors.... they still don't get here till the middle of next month but it's better than waiting until October.
If you want to order the bare minimum this might be around $40, but ordering from amazon and getting some of the optional stuff bumps up the price to where you've got to wonder if a retrotink might be a better option depending upon the application you are using it for.
Quick run down:
GBS 82000 (Amazon) = $22.99 (I got the last one at this price and it's on backorder)
ESP8266 (Amazon) = $6.49
Power Supply (eBay) = $6.31 (I found a seller from Texas as the one linked to in the video was $20 with shipping)
Minimum Total = $35.79
Options-
Scart connectors (Rakuten) = $6.28
Vga2Hdmi (Amazon) = $12.99
Clock Generator (Amazon)=$12.99
Total With Options = $68.05
I didn't get the clock generator.... seems like more of a pain to install than the wifi module so I'll see if I need it first. That makes my total around $55 which isn't terrible. I would say that most people are going to need some of the optional stuff... if you are going to hook up rgb consoles to the thing I'd bet your cables all revolve around scart. If you are using a lcd and it's halfway modern you'll need the vga2hdmi as they've stopped putting those on tvs unfortunately. If I rgb mod that tv I'm going to need a male to male scart cable and another connector so that's probably another $20 or so. If I don't rgb mod it the vga2component cables are another 10 bucks or so. The stuff adds up. A lot of these costs would also be required on other solutions though so keep that in mind. I took a look at the cases on thingiverse and none of them are super great. They either lack a scart connector or stupidly put the connector on the wrong side (outputs) of the box. I'll see if I can modify the files to make them more useable.
We'll see folks if this is a success or if I blew all my amazon credit on a dumb project I can't get working.