I wouldn't count on investment value at all. They're making a profit selling it retail, which means it costs them less to buy, and I'm not assuming 'razor thin margins' but about 50% markup at least. I don't begrudge them that, it's how business works and they certainly seem to need the money if recent claims are anything to go by.
Type A Jadeite only refers to the stone being untreated, natural Jadeite to my knowledge. It is not a claim of quality, but an on ramp to the best stuff. The best examples seem to be those I imagine anyone would prefer with rich, even colour, good translucency and transparency, and smooth texture. Those cost an absolute fortune and are glowing and almost glasslike sometimes. I could only guess that the examples being sold on Gemporia would be the equivalent of AA Tanzanite in terms of quality because I've seen worse and much better. I don't think it'll start bidding wars at auction houses, but if you like the material, go for it. It's a nice stone to wear even if you buy a cheap treated bracelet off eBay.
Hearing Dave call just about everything 'the ultimate' does make you wonder which bits really are the better purchases, though.