That is a very good price and so convenient to have an amp you can use with both guitar and keyboard. I carry 2 amps but that can get very tiresome having to setup 2 rigs. I use a Fender Hot Rod Deluxe tube amp for guitar and a Traynor K4 amp for keyboard. But the K4 also sounds pretty good for guitar when I run a modelling pedal into it as it also has a tube pre-amp.

You got a great deal on that Spider.