a cheap laser scanner (and I have one) is pretty much useless for any kind of detail. Actually, just useless :-)
Realistically you need a structured light scanner setup.

Now there are some cell phones appearing on the market that have this capability. The software is not there yet, but the hardware is in the pipeline.

There's also the intel Realsense system. Not sure what happened to it, couple of years ago it was going to be incorporated into a number of tablets and phones - but for some reason that doesn't appear to have happened.

There is another option for resin printing of small models.
The ono : https://store.ono3d.net/collections/all
Now this is under ?100 - but it needs a cell phone as well. That said a really decent cell phone can be had for as little as ?70 - or $90 https://www.amazon.com/DOOGEE-X30-An...rds=doogee+x30
Had my x30 for about 9 months - brilliant bit of kit.
So you can have a small scale resin printer for under $200.

Obviously a dedicated printer would be better and have a much larger print volume. But should you just want to try stuff out.
For under $500 you can get a decent fdm kit: https://www.ebay.com/itm/2018-Flsun-...oAAOSwRkBalT03
AND a little daylight resin printer.