To be honest, none of these look particularly good to me. The rings on the first one are set too low for a drum that is new, and the loops on the crown ring are too big. In addition, the skin has been trimmed off too short for the length of the loops. The shell is obviously lacquered, which means that, after a year or two, it'll look terrible, and the carving is not particularly nice.
The one on the right has lots of sap wood, which means it is not top quality (advertising blurb notwithstanding). It is labelled as Lenke, but that wood definitely is not Lenke--both color and grain pattern are wrong. I'm not sure what wood it actually is; it could be Iroko.
The one in the middle looks OK, but the carving is fairly coarse. It certainly isn't a shell that's outstanding in any way.
To claim that these drums are "master series djembes" is preposterous--they aren't.
I'm also not fond of claims such as "rarely needs tuning." At best that's misleading because it implies that, somehow, how often the drum needs tuning depends on the shell; it doesn't. What determines how often you have to tune a drum is the particular skin you have on it (different skins stretch by different amounts over time) and to what pitch the drum is tuned (higher pitch requires more frequent retuning). To some extent, the type of rope also affects how often you need to retune, but that's a secondary concern because, once the initial stretch is out of the rope, that's no longer an issue.
Overall, I'd say these are ordinary run-of-the-mill drums, nothing special, and average at best. For what they are, I'd say they are priced a bit too high.
I would be careful about buying a drum purely from a photo and a description, unless it comes from one of the truly reputable suppliers, such as
Wula Drum or
Drumskull Drums.
Cheers,
Michi.