I have had good experience with Geeetech. They have a nice lineup of aluminum extrusion printers. And are worth at least taking a look at. Here is the A10:
https://www.amazon.com/GEEETECH-Fast...s=geeetech+a10

The dual extruder A10m:
https://www.geeetech.com/geeetech-a1...er-p-1036.html

The A20:
https://www.ebay.com/p/Geeetech-3d-P...0584413&chn=ps
The dual extruder A20m:
https://www.gearbest.com/3d-printers...BoCRiQQAvD_BwE

And the A30:
https://www.ebay.com/p/Geeetech-A30-...4087695&chn=ps