It is very common for a few different stores to fall under one big umbrella company like Macy's and Bloomingdales (both belong to Federated Stores, along with some others) Usually these stores were at one point seperate entities, and when they got picked up by the father-company, they kept seperate purchasing and merchandising departments so while they buy some of the same products at the same prices, they will sell them at different prices depending on their merchandising plan. I have never even heard of buydig. I have heard a little about Beach (some good, some bad). I picked up my stuff from Amazon, and while I had a decent experience with them, I will probably make most of my purchases from now on from B&H. From what I have seen, their prices are right in line with most everyone, and they have a huge following of happy customers (Rare to see more positive than negative comments on-line about a retail outlet as people are more prone to complain about problems than to praise a job well done). If you are talking about saving 20 bucks on a $900 purchase, I will go with the established place everytime.