For under $500 you can buy a sub $200 printer like this: https://www.ebay.com/p/2291750255?ii...yABEgIcmPD_BwE . You can then buy yourself a 32 bit mainboard like the $20 SKR 1.4 Turbo like this one here: https://www.ebay.com/itm/BIGTREETECH...22419138c12303 . And then you can get a MMU2S kit for $300 from Prusa research right here: https://shop.prusa3d.com/en/upgrades...it-mmu2s.html# . And YES in this light you very much can have a full color 32 bit FDM 3d printer for under $500. You just have to have some skills about you to pull it off. Otherwise you need to come up considerably on your budget or lower your bar of expectations, lol.