I have a newer Tektronix digital/analog hybrid, the 2221A. It is a good scope, but the digital functions are very limited and the 2210 has even less. Mine has 4K points and that is usable for some things, but nothing like the digital scopes on the market now, that 2210 only has 1K points. If you're testing a power supply for overshoot on startup then 1K should be fine, but you're not going to be capturing long data streams on a serial bus. The good thing is that it can be a full analog scope when in non-storage mode.
If you're looking for digital, look elsewhere, but as an analog scope it is decent.
The price is up to you, people on eBay seem to think is worth at least $150, however the better 2221A sells for less. Bidders are funny. Just check it out thoroughly beforehand. When I got mine the digital functions didn't work, but the analog was fine. I used this as a bargaining point even though I intended it to stay in non-storage mode. All mine needed was the cables inside re-seated.