Ultrasone HFI-550
Price trend
23 months of data shown — Listing Comps build richer history as transactions accumulate.
Sold or Listed Prices
12 market transactions via web search — not HiFi Registry sales.
Understanding the market
Half of recorded transactions fall between $50 and $100. The full observed range is unusually wide — the highest recorded price is 6.0× the lowest. A spread that wide usually means the recorded sales are not strictly comparable: different configurations or finishes, units sold for parts or with cosmetic damage, or listings where the model name is shared across more than one variant. Treat the middle range as the useful signal and the extremes as outliers worth investigating before you price against them.
What buyers should know
Earpads and headbands are consumables and often need replacement — check whether replacements are still available for the model. On planar and electrostatic designs, confirm the drivers are undamaged, since these are rarely economically repairable.
This range reflects 12 recorded sales, compiled from publicly listed and completed sales elsewhere on the used market, not from HiFi Registry transactions. That is a large enough sample to price against with reasonable confidence, though condition and provenance still move individual units.