MechanicalKeyboards.com has been a go-to store for all sorts of mechanical keyboards here in North America. They carry many products with an easy to use search function and a very good inventory. Once in a while, they have something quite exotic for sale. I have purchased a few boards from them and my experience has been fine.
Toward the end of 2015, the store began to carry its own brand of mechanical keyboards. From the reviews that are starting to pour in, it seems like Ducky is the OEM. Good choice, I must say since Ducky is one of the premier keyboard makers in Taiwan and has a long history as an OEM. So, I don't think MechanicalKeyboards (shorten to MKBC so I don't have to keep typing that long name) is going to get some inferior products and so far the reviewers are smitten, thus pointing to a good start. Not to be outdone by other manufacturers, MKBC currently carries quite a variety of different keyboard configurations. They offer 104 with Cherry MX switches and PBT keycaps like the old Ducky Premier and Legend. They also have an TKL version with and also without RGB lighting both using Greetech switches. The best part is that they are priced relatively reasonable given the features and OEM's reputation. Some folks are begging them to make keyboards based on Gateron switches. Perhaps the next production run they will do so, but we will see....
Looks like their partnership with Duck Channel is also bearing fruit, such as having some rare Ducky Realforce keyboards available for sale at MKBC. Anyway, for the first time up at bat, they are doing quite well. I really do wish them well. I just hope that they continue to carry other brands' keyboards and I think they will do so. They are well positioned at the sales front line and knows exactly what the consumer sentiment is and where the momentum is by volume and interaction with customers. After all, money does talk when you ask the right questions.