I think at shows I've seen pots similar for over $100, so you probably got a decent deal. The best part is you bought a pot you like for a specific tree in your collection, the "deal" part shouldn't matter TOO much. I think the most I ever spent on a pot was $140, but because I liked it so much, the price didn't seem to matter.
I think you got a reasonably good deal for a Tokoname pot of that size. That seller also seems like a nice guy from the few times I've spoken to him, plus he's not one of the many eBay sellers with high priced crap.
Probably not a bad deal. I've bought a number of Tokoname through the years, new, used, antiques.
In recent years I've bought a number of Tokoname here: http://www.tokoname.or.jp/bonsai/. Click on "Gallery" and you can see what's available in their 6 galleries. I didn't look all that closely, but I didn't see your pot there, but you can get an idea what they've got. Yen/USD conversions for the price and the shipping will tell you what to expect to pay. Shipping time is several months, and the packing is incredibly well-done. Never any damage at all, and no sense any damage could even be possible. Great folks to do business with.
This pot looks extremely similar to the one you bought, and about the same size, though maybe a bit smaller. http://www.tokoname.or.jp/bonsai/reihou/reihou001.htm Price $208 + shipping from Japan. I say good buy, especially if it goes well with the tree you have in mind.