Masterbuilt manufactures super low priced cookers, made in China for frugal people in the USA. Quality and price is are line with Brinkmann, Char-Griller and Master Forge. Some models have a few unique features that provide a little bang for very little buck. Most of their products were largely more of the same cost driven stuff with a different logo on the lid, but in recent years they have taken a step up in quality on many models.
Masterbuilt is widely distributed online and at brick and mortar outlets, including box box stores.