Categories/Computer Peripherals, Hard Disks and Modems/UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage | HD3513 Compatible for PC, Mac, TV, Desktop, Laptop (Black)
healthy

Buy-box price is 2.8% below MSRP and a 2P seller controls the listing

UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage | HD3513 Compatible for PC, Mac, TV, Desktop, Laptop (Black)

UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage | HD3513 Compatible for PC, Mac, TV, Desktop, Laptop (Black)

Unionsine·
ID B0F5PR3YKV

The UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage | HD3513 Compatible for PC, Mac, TV, Desktop, Laptop (Black) was tracked for 30 day(s). During this period, the Buy Box price ranged from $349.99 to $359.99 against an MSRP/MAP of $359.99. The product's pricing health is currently flagged as healthy.

Tracked 30 days · past 30-day window
Last updated Sep 30, 2026

Price Overview

FLOOR PRICE ($)

$349.99

MAX PRICE ($)

$359.99

AVG PRICE ($)

$358.66

EROSION (%)

2.78%

MSRP/MAP ($)

$359.99

Price erosion from MSRP
Minimal2.78% below MSRP
MinimalModerateSevere

The product hit a low of $349.99, following a peak of $359.99 during the tracking period. Compared to its MSRP of $359.99, the floor price reflects a minimal variance of 2.78% erosion.

Tracking window: Sep 1, 2026 – Sep 30, 2026

Buy box distribution

100%2P
2P · 1 seller, 100% share
Sellers won
1 of 1tracked sellers
Changed hands
0 timesover 30 days
SellerConditionPrice vs MSRPBuy box daysErosion
2PAILUO-US· Top
New
$359.99
at MSRP
30d (100%)
0.00%
Erosion severity: green under 10%, yellow 10–20%, red above 20%

The Buy Box for UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage | HD3513 Compatible for PC, Mac, TV, Desktop, Laptop (Black) is primarily held by AILUO-US (2P) with a 100% share, winning the Buy Box for 30 out of 30 tracked days.

Seller density vs. price erosion

Buy-box priceActive sellersMSRP $359.99
Peak seller pressure1 seller on Sep 1Highest count during tracking window
Price impact at peak−$10.00$359.99 → $349.99
Price trendRecoveringBased on trailing 30 days
Seller proliferation→ Stable0.0/day avg · 0 net

Buy-box price stayed between $349.99 and $359.99, largely stable over the period. It entered the period already $10.00 below MSRP ($359.99), before any crowding pressure arrived. Seller count peaked at 1 on 09/01 — adding +0 net sellers over the full period. Seller activity and pricing have both been steady — no acute competitive pressure detected.

Seller churn and influx

Comparing sellers before Sep 28 vs last 3 days of 30-day tracking period

New entrants (0)

No new sellers in recent period

Exited (0)

No sellers exited in recent period

Persistent (1)

Key Findings

healthy
Price Erosion

$10.00

Minimal2.8% below MSRP

Pricing is largely holding — floor sits $10.00 (2.8%) below MSRP, minor drift within an acceptable range.

Seller Activity

Clean Channel

CleanStable

No 3P sellers detected — the channel is clean.

Buy Box

AILUO-US

Controlled2P · 30 wins

Buy-box is controlled — AILUO-US (2P) leads with 30 wins at $359.99, and 3P interference is minimal.

Recommended Actions
1

Channel health is stable — maintain current monitoring cadence and review pricing quarterly.

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