I had never heard about them until now. However, if amanita extracts are your thing, go for it. I did look over their site and was able to gleen a bit of information.
While I applaud them for publishing test results for heavy metals and other toxic compounds, they do not publish any tests for muscimol potency. (They have LAB TESTED as a sales point, but it is misleading.)
They are probably just relying on powdered bulk amanita muscaria to average out the muscimol content, if I had to guess. Less risky that way, I suppose.
Looking at their other products, especially their Lions Mane gummies, they are insanely overpriced and spiked with caffeine. There is no indication about what kind of Lions Mane product they are using. It could be below dirt cheap mycelium or it could be the fruit itself. Dunno. (Lions Mane mycelium is being sold as powder now, especially on Amazon, which is absolutely pointless.)
With Lions Mane, I believe that recent studies that were focused on its benefit started at 5 grams per dose, not 500mg. With the gummies they are selling, you have to basically take an entire bag to hit "normal" dosage levels for any of the mushroom powders they are selling. And no, medicinal mushroom dosages are not standardized. However, the dosages are usually much higher in plain capsules of the same types. Regardless, you will get so hyped on caffeine, it will negate any positive benefits.
Honestly, it looks like their products are just a novelty.