You want a resin print with a layer height of around 0.02mm. The material should have some flex and not be the cheapest brittle resin so your mini survives a fall from the table. Prices depend heavily on the size and volume of the model, the Material used and if it is presupported. Hand supporting costs alot of time and will make everything much more expensive. Once you give your file away its gone, its the internet, you can stop noone from Anything anymore.

Well depends on the actual material you are using. Just google PVC free vinyl, you can buy the stuff in any form. If you find sth for your application a laser is perfectly fine.

Standard Vinyl that contains PVC should never be heated with a Laser. It will create corrosive chlorine gas.

Any advanced Vinyl like PVB, PVA or any variant that does not contain chlorine can be cut with diode co2 and fiber without issues.

I went down that road first building a plotter attachment then trying to attach a knife on an ender 3. Kinda got it to run by simply extruding svgs into a 1 layer body that i could then “print” with a standard slicer. In the end i build myself a laser, and let me tell you, everything before was a huge waste of time :) the laser cuts like a beast, much faster and cleaner. Would not recomment using a knife in a laserworld.

If you are oke with the smaller volume, this is a good printer. this thing will be able to print flawlessly, all parts are semi open source and there’s a great community if you need support parts or any help. Prusa is above average stuff.