What does a used Watson-Marlow 520S cost?

Name: Watson-Marlow 520S
Brand: Watson-Marlow

We don't yet have enough observed listings to publish a firm price for the used Watson-Marlow 520S. We're tracking it and will publish a peer-group median once we have 5+ complete-system comps.

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Price Guide

Used Watson-Marlow 520S Price Guide

Watson-Marlow · 520S · Used market pricing intelligence

Thin dataInsufficient data — collecting more comps.

Updated August 3, 2026

Active Listings

observed now

Observations

all-time asking-price data points

Valid Comps

across 1 bucket

Sources

active for this device

We're tracking 12 active Watson-Marlow 520S listings across 1 source, but we don't have enough complete-system comps to publish a median yet. Parts and modules are tracked separately — part / accessory (0 comps, collecting) — so the complete-system price isn't skewed by mixing categories.

Market Valuation by Listing Type

Median is the primary statistic — used clinical pricing is full of outliers and the median ignores them.

Part / Accessory

0 comps

Thin group

observed — · 0 listings

Collecting

0 listings

Prices are based on publicly observed listing data — not appraisals. Always verify device condition, service history, and regulatory status before purchase.

Methodology

Clinical Asset Appraisal aggregates listing data from eBay, GovDeals, DOTmed, HiBid, LabX, and PublicSurplus daily. Each listing is classified by type (complete system, major module, part / accessory, for parts / repair). Medians and ranges are computed only within peer groups — a complete system is never averaged with parts. Confidence thresholds: comps ≥ 0.65; deal-feed device-match ≥ 0.75 and classification ≥ 0.65. Median is the primary statistic; the mean is shown only as a small secondary number because outliers dominate this market. Data is directional — always verify independently before purchase. Read full methodology →

Watson-Marlow 520S

Watson-Marlow

520S

Quick Stats

Active listings12

Historical observations0

Sources1

Comp buckets1

CoverageCollecting

Verify a Listing Full Intelligence Report

We are paid to value equipment, never to trade it — no fee we earn moves with the number we report or with what your equipment later sells for.

Library figures are estimates based on recorded listing data. They are not appraisals and not guaranteed sale prices. A signed, dated, USPAP-conformant appraisal is a separate engagement. The library publishes 231,081 equipment price points across 9 marketplaces, with medians for 44 device classes. Refreshed every 24 hours. Every datapoint links back to its source.

Independent of, and not endorsed, sponsored, certified, or authorized by — and not an agent of — any marketplace, manufacturer, or source.

COLLECTING

We're tracking this device but don't yet have observed complete-system listings to publish a firm price. The guide will populate as listings accrue.

See current listings on eBay

Live search results for Watson-Marlow 520S. Verify condition and accessories before purchase — recorded asking prices are not verified. CAI may earn a commission from clicks.

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Related guides

Same modality, ranked by complete-system sample size.

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Firm · 29 comps · ~$15,000

Buchi R-205

Firm · 23 comps · ~$850

Agilent 1200

Firm · 22 comps · ~$14,875

Eppendorf 5424

Firm · 21 comps · ~$1,049

What to verify before buying

Generic checklist for lab equipment — these are the items that drive the largest price variance.

Confirm the listing is a complete system, not a part or accessory.
Request service history and the date of the last preventive maintenance.
Verify condition independently before purchase - condition drives the largest price variance.
Confirm the seller is the actual holder of the equipment (vs a broker).

FAQ

Every answer is built from real observed data — no AI prose, no fabricated specs.

What does a used Watson-Marlow 520S cost?: We don't yet have enough observed listings to publish a firm price for the used Watson-Marlow 520S. We're tracking it and will publish a peer-group median once we have 5+ complete-system comps.

About this guide: Prices reflect publicly observed listings, not verified sales. Condition, configuration, and seller drive most of the variance. Clinical Asset Index does not broker, sell, inspect, or appraise. See methodology for full criteria. Confidence tiers: Firm = ≥5 CS listings; Limited = 1–4; Collecting = 0.