Best price for Fluval FX4/FX5/FX6 Purge Valve
Best verified price
3 stores compared · 3 fresh offers · last market update 6h ago
We score a price only against history we recorded ourselves. Until then this product shows its market range instead of a number we would be inventing.
You will be taken to kensfish.com. UponSale does not process payments and does not sell this product.
Market summary
UponSale currently tracks this product at 3 stores. The lowest verified price among 3 fresh offers is $15.99. The next-cheapest fresh offer is $18.50, $2.51 more.
What our data shows
- The current best offer is $2.51 below the next-cheapest fresh offer.
- Choosing the wrong store today can cost up to $9 more for the same item.
Current prices for Fluval FX4/FX5/FX6 Purge Valve
3 stores tracked| Store | Match | Item price | Shipping | Total | Stock | Freshness | Action |
|---|---|---|---|---|---|---|---|
| KensfishBest verified kensfish.com | New | $15.99 | unknown | $15.99 + ship | Unknown | Checked 5h ago | View offer |
| Aquacadabra aquacadabra.com | New | $18.50 | unknown | $18.50 + ship | Unknown | Checked 6h ago | View offer |
| Bluefishaquarium bluefishaquarium.com | New | $24.99 | unknown | $24.99 + ship | Unknown | Checked 5h ago | View offer |
Ranked by the lowest comparable price among offers that pass our freshness, variant and anomaly checks. Where a store does not publish a shipping cost we say so rather than assuming it is free. All amounts are the store’s own published prices at the time shown.
Fluval FX4/FX5/FX6 Purge Valve price history
Recorded by UponSalePrice history is just getting started
We began tracking this product recently. Current prices are already available above; the chart becomes useful as new observations arrive — we record one series point per day per store.
Price history for Fluval FX4/FX5/FX6 Purge Valve is just getting started, so there is not yet a range to describe.
Is Fluval FX4/FX5/FX6 Purge Valve a good deal today?
Buy now or wait?
shop aroundBuy from the right store
The same product is listed at 3 stores we track today, and the cheapest is 36.0% below the dearest. Whether to buy now or wait needs price history, which we are still recording.
This is a description of what we observed, not a prediction. We do not forecast future prices.
Market price snapshot
Against the rest of the category
Part →Among the 161 part products we hold a current price for, this sits in the dearest 47%.
Category figures are computed from the prices we currently hold across every store we track, not from a manufacturer’s list. They move as the catalogue does.
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How UponSale tracks this product
Stores compared
$9 spreadData provenance
- Stores
- 3 tracked
- Fresh offers
- 3
- Observations
- started today
- Last update
- 6h ago
- First tracked
- August 30, 2026
Every price above was read from a retailer’s own published data and stored with its timestamp. The history is ours, not a retailer’s claim.
How we calculate this
Where prices come from. We read the product data each retailer publishes on its own site, unhurriedly and within the rules that retailer sets. We never work around an access control and we never buy collected data of uncertain provenance.
What “verified” means. An offer can win best price only if it is inside our freshness window, matched to the exact variant, in stock, and free of an unresolved price anomaly. “Best verified price” means lowest among the fresh offers we track — not the lowest price on the internet.
How history works. Every price we observe is stored with its source and timestamp. Daily market low, median and high come from those observations, so the price history on this page is ours, not a retailer’s claim.
What we exclude. Stale offers, mismatched variants, bundles compared against single items, and prices that move implausibly without corroboration from another store.
Images. Product photographs come from the retailer they sit beside, loaded from their own image host. We do not re-host them and claim no rights in them.