Boston Acoustics SPG555

Name: Boston Acoustics SPG555
Brand: Boston Acoustics

Average price

$331

Market sales

Price trend

Insufficient trend data

$180Avg $331$650

Typical range $250 – $375 · middle 50% of transactions

Based on 24 market transactions via web search — not HiFi Registry sales. HiFi Registry sales will accumulate as new listings sell on HiFi Registry.

Sold or Listed Prices

Date	Sold or Listed for
Mar 21, 2015	$300
Feb 7, 2015	$300
Jan 31, 2015	$200
Jan 18, 2015	$225
Dec 15, 2014	$275
Dec 23, 2014	$200
Oct 23, 2014	$525
Oct 21, 2014	$225
Oct 17, 2014	$250
Oct 15, 2014	$300
Sep 13, 2014	$250
Sep 13, 2014	$300
Sep 25, 2014	$180
Aug 23, 2014	$575
Aug 23, 2014	$350
Sep 12, 2014	$250
Jul 29, 2014	$225
Aug 23, 2014	$400
Jul 24, 2014	$350
Jul 24, 2014	$350

24 market transactions via web search — not HiFi Registry sales.

Understanding the market

Half of recorded transactions fall between $250 and $375. The full range runs 3.6× from lowest to highest, which is normal for used equipment where condition, included accessories, and service history vary between units.

What buyers should know

Powered subwoofers fail at the amplifier module far more often than at the driver. Ask whether the amp has been serviced or replaced, and confirm the unit powers up and passes low-frequency material without distress. Shipping weight makes these expensive to move.

This range reflects 24 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.