I don’t have experience with the models on sale but it seems the MDB hit hard before you even visited the forum 
- Would you play it?
- Is it a good deal?
Those are the two questions I would try to answer before buying a bass. You can get into more detail but those are the two main question IMO. A lot of people here (including me) own more than one bass for different reasons. The most common one is different basses for different tone/purposes so in general I think you could go for it.
There isn’t really a reason to limit yourself to one bass guitar but at the same time I personally would like to try the instrument out myself before buying it and since it seems that it’s a private offer there’s probably no return policy if you don’t like it.