Sure, you can buy a Ferrari, park it on the driveway and tell everyone how fast it goes. Does that make you a better driver, a safer driver, or someone who knows how to control a car at high speed...nope, none of those things.
It might sound easy, it might look easy, it may even appear that others do it so it can't be that difficult. Never underestimate the effort that others had to put into getting something to work so well that it looks easy.
There are always plenty of printers on Ebay that people bought without understanding what they were doing.
If you put the effort in (and over 2 years on from my purchase and build I am still learning every time I design something), it's a totally absorbing side hobby to the tanks.
