There are many camera companies on the web that advertise great prices, but when you try to order it, either out of stock, or unavailable for some other reason. That's when they hit you with the bait and switch. Adorama is NOT that kind of company. (No, I'm not affiliated with them in any way, other than being a customer.)
I have looked for items on Adorama's website before, and if that product was unavailable, it was noted on the site. If you didn't see anything like that, I would assume they have what you ordered, and you will receive the product at the listed price.
There are still a few good companies on the web selling camera gear that really do take care of their customers. I would consider Adorama to be one of those companies, as well as B&H and a few others. I have never thought twice about placing an order with Adorama.