There's lots of good sequencers at that price point, or cheaper. E.g. check out NI's Maschine range.
You should explore the machine if you get the chance or watch some of the stuff people do with it. It is a great creative instrument.
in addition, the op-z is not just a sequencer. even if you considered it just a sequencer, it can sequence multiple audio tracks, cv tracks, and a video track.