* I got my AxiDraw as an impulse buy for a Black Friday sale. They go on sale around then
* Search AliExpress for "AxiDraw". There are cheap clones for ~$130 shipped
* Thingiverse/etc have some DIY plotters in various form factors: Stationary like an AxiDraw, polargraph (hanging from two points vertically), little plotter vehicles that "feed" a paper through by rolling over it...
* Old 1970s/80s retail plotters (i.e. HP). These are sometimes more trouble than they're worth, both mechanically for repairs and software-wise. Serial port versions are more rare than HP-IB versions. The drawingbots Discord has good vintage info here
Plotters are really fun, and HPGL is easy to generate with code.
[1] Or get a thin client with a serial port (I have an HP t630) and put Linux on it and use it as a plot server.
Are you able to elaborate on what you were expecting or hoping for?
[1] Not a typo, but I don't have a way to check it. I use it in its "low accuracy" 0.025mm mode.
However there were a few issues - bit fiddly to construct (the same might be true of the axidraw i guess) and windows only. Found some software online to drive it on linux.