The Monoprice MP Select Mini is the best 3D printer for the money, with one problem: you can't buy replacement hotends. Hotends are consumables, and eventually the hotend on this $200 printer will break.
Right now, the solution to a broken hotend on this printer is to spend another $200 to buy another printer. That's absurd, and any company that does that will quickly go out of business.
The solution? A 3D printed hotend adapter for the E3D V6. This should be the first thing you print on the MP Select Mini.
The print has been tested, it works. You'll need some M3 nuts and M3 socket head screws (M3 x 20mm or thereabouts).
The stock heater cartridge and thermistor can be reused with the e3d hotend. If you're looking for a 'buyer's guide', here you go:
The total comes to £41.40. I guess the adapter would work with a chinese e3d clone, so if you only have $10, get one of those.