Categories/Air Purifiers/Shark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray
healthy

Buy-box price is 9.8% below MSRP and a 1P seller controls the listing

Shark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray

Shark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray

Shark·
ID 5337847422

The Shark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray was tracked for 22 day(s). During this period, the Buy Box price ranged from $185.00 to $205.00 against an MSRP/MAP of $205.00. The product's pricing health is currently flagged as healthy.

Tracked 24 days · past 30-day window
Last updated Sep 30, 2026

Price Overview

FLOOR PRICE ($)

$185.00

MAX PRICE ($)

$205.00

AVG PRICE ($)

$201.36

EROSION (%)

9.76%

MSRP/MAP ($)

$205.00

Price erosion from MSRP
Minimal9.76% below MSRP
MinimalModerateSevere

The product hit a low of $185.00, following a peak of $205.00 during the tracking period. Compared to its MSRP of $205.00, the floor price reflects a minimal variance of 9.76% erosion.

Tracking window: Sep 9, 2026 – Sep 30, 2026

Buy box distribution

82%1P
1P · 1 seller, 82% share3P · 2 sellers, 18% share
Sellers won
2 of 3tracked sellers
Changed hands
1 timeover 22 days
SellerConditionPrice vs MSRPBuy box daysErosion
1PWalmart.com· Top
New
$205.00
at MSRP
18d (82%)
0.00%
3PRetailWell
New
$185.00
−$20.00 below MSRP
4d (18%)
9.76%
3PAllSmartDiscounts
New
$189.95
−$15.05 below MSRP
0d (0%)
7.34%
Erosion severity: green under 10%, yellow 10–20%, red above 20%

The Buy Box for Shark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray is primarily held by Walmart.com (1P) with a 82% share, winning the Buy Box for 18 out of 22 tracked days. Only 2 of 3 total sellers have won the Buy Box.

Seller density vs. price erosion

Buy-box priceActive sellersMSRP $205.00
Peak seller pressure2 sellers on Sep 10Highest count during tracking window
Price impact at peak$0.00$205.00 → $205.00
Price trendErodingBased on trailing 30 days
Seller proliferation↑ Increasing+0.1/day avg · +1 net

Buy-box price declined from $205.00 to $185.00 — a $20.00 drop over 22 days. Price opened right at MSRP ($205.00). Seller count peaked at 2 on 09/10 — adding +1 net seller over the full period. Seller count has held steady even as prices shifted.

Seller churn and influx

Comparing sellers before Sep 28 vs last 3 days of 22-day tracking period

1 3P seller exited the listing — channel cleanup signal.

1 seller exited with no new entrants — competitive pressure easing.

New entrants (0)

No new sellers in recent period

Exited (1)
Persistent (2)

Key Findings

healthy
Price Erosion

$20.00

Moderate9.8% below MSRP

Moderate erosion — floor price is $20.00 (9.8%) below MSRP and slipping.

Seller Activity

2 3P Sellers

Controlled1 exited

3P activity is limited to 2 sellers — controlled, though 1 have since exited.

Buy Box

Walmart.com

Contested1P · 18 wins

3P sellers win the buy box 18.2% of the time; RetailWell leads with 4 days at $185.00 (9.8% below MAP) — worsening.

Recommended Actions
1

Monitor buy-box ownership daily — 3P sellers captured 18.2% of buy-box snapshots across the tracking period.

2

Prioritise enforcement action against RetailWell, the highest-frequency 3P buy-box winner.

3

Escalate directly with Walmart — The lowest price has dropped to $185.00, which is 9.8% below MSRP ($205.00).

4

Review MAP compliance — The lowest price has dropped to $185.00, which is 9.8% below MSRP ($205.00).

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