Because they are really Scalpers and not retailers that use Bots to resell on places like Amazon. The same Omen 30L desktop I purchased from Amazon for $1999, those guys are selling it for $3499. That’s a $1500 markup.You should have put Eluktronics on your list. Why is it always the big guys and no love for the small vendors?
MSI's stealth series has had two NVM.e slots for years now as well. Agree that two NVM.e slots are a must. Good choice.Buy Gigabyte if you want a product from a company that is on its last leg.
Asus (when I had mine) was well built but poorly designed and performed poorly.
While not as well built (sturdy), I find my HP Omen to perform incredibly well. Glad I traded the Zephyrus for the Omen. Omen has two upgradable RAM slots and two nvme slots. Cooling is phenomenal. It's not a 3080 but the 3070 is sufficient for what I play.