I have ordered 4 cameras, multiple lenses and many different camera accessories from Adorama over the last 7 or eight years and have had no problems at all, nada.
I have returned items with no problems, talked to sales and customer service people and have always been treated fair and honestly.
I find it almost impossible to believe the 1 star reviews that I see on Sitejabber.
I would highly recommend Adorama to anyone in the market for camera equipment.