I just got my printer this week. It's a home printer that's pretty much 'point and click' for operation. Thingiverse has a lot of files to use as I learn CAD.
The niche I see is toys. Lots and lots of toys. Different kinds of toys. If you have kids this is a great option. They don't need to be perfect, the filament runs me about $15 per kilo, and once it's running it just runs.
I'm planning on using it for prototyping some things for my business but the quality isn't there for production. But I can get the items right before sending them off to be printed on a 'real' 3D printer and save myself money and headache.
Was it worth it? Can I decide that after less than a week? Yes and yes. I think it's worth what I paid for what I want. And I won't use it all the time but I will use it consistently.