The Sovol SV04 is an IDEX printer that can be had for less then $500. This makes it an interesting option for multi-material printing. In this review, I'll share my thoughts after using it for several months.

The Printer : https://sovol3d.com/products/sv04

A couple other reviews for more prospective:
@3DPrintGeneral    • Video  
@LostInTech3D    • No Purges?! The SOVOL SV04 IDEX print...