It seems to come down to this. You can have an artisanally made higher quality product in a more limited supply, or you can have a mass produced product in greater supply. I know which I would prefer, and since there's both types being produced, balance your choices.
SG and GH will show up when they show up. The hoarders and crazies will swoop in on the larger on line stores and wipe them out, the on line stores doing precious little to put meaningful limits on purchase amounts.
Or you can do what I've done over the years, which is to buy limited production blends that I like from B&M's, who will have stock longer than the on line stores. I've followed this approach for years with regard to the Esoterica drops, with no meaningful issues. You may pay more, but you'll have the blends to enjoy. And if you've been a good customer over the years, those B&Ms will hold stock for you if you ask. The only store with a strong on line presence who will also hold stock for you is Iwan Ries, but they're a class act and a rarity these days.