I've been playing with diode lasers for about 2 years, these are the usual entry point for people exploring some form of CNC that is affordable.
You can start for the least expensive or jump in at a bit higher level and get a bigger work area and/or power level.
I've done a number of different
laser projects but the most satisfying so far has been cutting veneers for inlays.
There is a lot that can be done at the lower price end and it lets you become familiar with what can be done and if you want to step up to the fancier equipment.
A CNC router is priced like a CO2 laser which I consider the 2nd tier of getting into the CNC world