I remember gaming with those a few times back in the day. Crude and simplistic but absolutely wonderful and they did/do the job as well as anything you can buy now.
I don't begrudge anyone making a living out of supporting this hobby but the deluge of mdf, resin (and even more so 3D print) pieces is killing a huge part of the "hobby" aspect of this hobby. It seems to be people look to see what they can buy before what they can make, which is a real shame.