It's hard to offer an opinion without offending someone, so I'll stress that this is just MY OPINION.
I consider the Beck frame design, interior space, and construction quality to be a bit of a step up - which is why they usually tend to cost a bit more than some others. Mid 20's is a great price if it's a recent car, as opposed to one he's had in stock for a long time. I started looking at Beck's about three years ago(two years before I got mine), and they've introduced some running changes that make the more recent cars more attractive. That, along with the excellent customer support I've received, make me a big supporter. Also, it's important to know who actually assembled the car. Did he do it, or did he get it turnkey from Special Edition. If he just did a few, and wasn't a skilled builder, the manufacturer may not matter, and you probably want to pass on this one. If, however, it was well made by him, or came straight from Special Edition, it sounds like a good deal. Your proximity to Special Edition should be a big plus. Give them a call and see if they can answer some questions about the builder and the car.
When you talk to the seller again, ask if he did the build, if he used all new parts, including engine and transaxle, and what the specs on both of those items are. If the car was built at Special Edition, all parts will be new.
My experience with my car has been great, aside from the normal sorting that all of these cars have in the beginning. Carey made sure that all issues were dealt with quickly. A great company to do business with.