I have a Casio AP-650 which is about ten years old now. It's an older model of this one but I think it has the same case and action since it looks identical.
While I don't have much (meaning anything at all) to compare it to, I'm happy enough with it.
I got my AP-650 in much the same way: Costco had it on sale in November as some kind of a clearance special. I assume this is the same thing since they have been offering it at "$1000 off!" for something like $3300 (regular $4300), every few weeks for the past six months or so.