ExPutt-style putting sims focus on short-game practice with camera tracking on a putting mat - a different job than a full-swing launch monitor bay. Buyers usually want winter putting reps, stroke feedback, and games without building a driver cage.
Treat it as a putting training product: mat space, lighting, and whether you care about stroke path feedback more than simulating full courses. It will not replace a TrackMan bay; it can complement one in a den or office.
ExPutt-class gear fits when putting practice is the primary indoor goal - not full-swing ball flight indoors.