He looks like a horse with a very good gait. First and foremost do you ride with any people a lot or just go out alone? I ask this question because up where I live people tend to think the gaited horse is the way to go only to find that most are very forward and just generally move faster than the stock horse which sometimes can cause problems when riding in a group. Then they end up trying to sell the animal in order to replace it with a stock horse and take a loss from what they paid since gaiteds just aren't that popular up north. The other problem is that if you want to mess around with any play days they often don't do well and are judged less than the stock horses. And there aren't many shows offered for gaiteds.
So if you are in the south and with a lot of other gaited riders he is worth a look. How bad a price are they asking? And do you know anything of how they operate. It sounds like they buy and sell so do they have a good reputation and a contract that if the horse doesn't work out within a certain period of time he can be returned.
Just lots of things to think about.
A woman can NEVER have too many horses.....