The standard: what it takes to get a shaka.

Mr. Deals checks Amazon deals against each product's own price history. A deal has to clear every rule below before it is listed. Written and applied by Ryan Mulvany.

The rules

Five favorites
Picked the way an editor would: the five best deals of the day, and not the same kind of product as yesterday.
A shaka is a true low
Its lowest price ever, or its lowest in at least a year, and 25% or more under its own 90-day average.
Good price
20% or more under its 90-day average, but it has been cheaper. We print what it has been.
List price is ignored
Usually means its own 90-day average, not the crossed-out number.
No pump
It was not marked up before the drop.
Worth it
Saves at least $5 against its usual price.
Brand lane
For big brands the test is the discount against the product's own price history.
Reviews lane
For everything else: 4.4 stars or better, 2,000+ reviews and 1,000+ bought last month.
Codes are fine
If it needs a promo code, the code and its end date are printed. Codes come from Koupon and are not tested at checkout.
Prime prices count
Prime member prices are allowed and labeled Prime price.
Ships with Prime
Sold by Amazon, or a third-party seller with Prime shipping. New and in stock when checked.

How the daily check works

Every day we pull the most promoted Amazon deals from deal sites, coupon sites and price trackers. Each one is then checked against its own Amazon price history. Most fail. The ones that pass are listed on the home page, and the five best are the top five.

What "usually" means

"Usually $142" is the product's average price over the last 90 days. It is not the crossed-out list price, which we ignore.

What happens to the rest

Deals that were checked and did not pass are shown under No shaka with the reason: not low enough, not fresh, sold out or gone. Every day keeps its own page under past days.

Prices move and deals can end at any time. Links are plain Amazon links, no affiliate tag.