Categories/Air Purifiers/KNKA Air Purifier for Home Bedroom Large Room Up to 1,695 Ft² in 1 Hr, HEPA Air Cleaner with Washable Pre-Filter, AHAM VERIFIDE, AQI Display, ECO Mode, Pet Mode for Pets, Dust, Pollen, APH4000
critical

Buy-box price is 53.9% below MSRP and a 2P seller controls the listing

The KNKA Air Purifier for Home Bedroom Large Room Up to 1,695 Ft² in 1 Hr, HEPA Air Cleaner with Washable Pre-Filter, AHAM VERIFIDE, AQI Display, ECO Mode, Pet Mode for Pets, Dust, Pollen, APH4000 was tracked for 24 day(s). During this period, the Buy Box price ranged from $119.97 to $129.99 against an MSRP/MAP of $259.99. The product's pricing health is currently flagged as critical.

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

Price Overview

FLOOR PRICE ($)

$119.97

MAX PRICE ($)

$129.99

AVG PRICE ($)

$123.31

EROSION (%)

53.86%

MSRP/MAP ($)

$259.99

Price erosion from MSRP
Severe53.86% below MSRP
MinimalModerateSevere

The product hit a low of $119.97, following a peak of $129.99 during the tracking period. Compared to its MSRP of $259.99, the floor price reflects a severe variance of 53.86% erosion.

Tracking window: Sep 7, 2026 – Sep 30, 2026

Buy box distribution

100%2P
2P · 3 sellers, 100% share
Sellers won
1 of 3tracked sellers
Changed hands
0 timesover 24 days
SellerConditionPrice vs MSRPBuy box daysErosion
2PKNKA Prime US· Top
New
$129.99
−$130.00 below MSRP
24d (100%)
50.00%
2PKNKA US
New
$259.99
at MSRP
0d (0%)
0.00%
2PAmazon Resale
New
$148.47
−$111.52 below MSRP
0d (0%)
42.89%
Erosion severity: green under 10%, yellow 10–20%, red above 20%

The Buy Box for KNKA Air Purifier for Home Bedroom Large Room Up to 1,695 Ft² in 1 Hr, HEPA Air Cleaner with Washable Pre-Filter, AHAM VERIFIDE, AQI Display, ECO Mode, Pet Mode for Pets, Dust, Pollen, APH4000 is primarily held by KNKA Prime US (2P) with a 100% share, winning the Buy Box for 24 out of 24 tracked days. Only 1 of 3 total sellers have won the Buy Box.

Seller density vs. price erosion

Buy-box priceActive sellersMSRP $259.99
Peak seller pressure3 sellers on Sep 22Highest count during tracking window
Price impact at peak$0.00$119.97 → $119.97
Price trendRecoveringBased on trailing 30 days
Seller proliferation↑ Increasing+0.0/day avg · +1 net

Buy-box price fell to a floor of $119.97 before recovering to $129.99. It entered the period already $140.02 below MSRP ($259.99), before any crowding pressure arrived. Seller count peaked at 3 on 09/22 — 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 24-day tracking period

New entrants (0)

No new sellers in recent period

Exited (0)

No sellers exited in recent period

Persistent (3)

Key Findings

critical
Price Erosion

$140.02

Severe53.9% below MSRP

Severe erosion — floor is $140.02 (53.9%) below MSRP; the product is well below its intended price point and brand integrity is at risk.

Seller Activity

Clean Channel

CleanStable

No 3P sellers detected — the channel is clean.

Buy Box

KNKA Prime US

Controlled2P · 24 wins

Buy-box is controlled — KNKA Prime US (2P) leads with 24 wins at $129.99, and 3P interference is minimal.

Recommended Actions
1

Immediate pricing intervention required — The lowest price has dropped to $119.97, which is 53.9% below MSRP ($259.99).

2

Escalate directly with Amazon — The lowest price has dropped to $112.83, which is 53.9% below MSRP ($259.99).

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