Dunu EST112 is a Tribrid IEM, combining a 1DD, 1 Armature driver, and two electrostatic drivers. Its price is set at 489.99USD.
Craft Ears is a polish company that makes hand-made IEMs. Four is their middle model, and the custom version you'll meet in this review costs 580 euros.
Craft Four is a CIEM with a UIEM option made by a Polish company Craft Ears. It uses four Balanced armature drivers and costs €550.