At this point, I think it's safe to say that hes folded up shop, and moved on.... As sad as it pains me to say it... but We should move on too. Flash cart sites come and go, and there's a few good ones left.
https://stoneagegamer.com/ and
https://bennvenn.myshopify.com/ still make the best flash carts by hand in small batches (not mass-produced), and offer great firmware support. You pay a premium price, but get a quality product and killer support in return. To me, that's a much better trade-off than getting a cheap Chinese cart and having to rely on forum support and hacky, dodgy firmwares from who-knows-where.
Now on the "cheap+Chinese" end of the spectrum however,
http://www.ezflash.cn/products/ offer decent support with their fairly-priced flash carts. I have a few of their carts, and they perform just fine for the price. And the support isn't half bad. There's also pretty good community support right here on
FileTrip!
Hope this helps out anyone looking to buy a flash cart, giving you a few of the better options out there.