Storage Price Index

Guide · updated

The advertised price is not what you keep paying

Every listing publishes two figures. Across all 52,892 observations the higher one is exactly 1.5× the lower, to within a dollar of rounding. Not approximately, and not sometimes.

  1. under 1.45 655
  2. 1.45 to under 1.50 20,271
  3. exactly 1.50 10,795
  4. over 1.50 to 1.55 20,631
  5. above 1.55 540
Distribution of the regular-to-online ratio across 52,892 observations, with the exactly-1.50 bar counting only exact matches.

Every observation, bucketed by its regular-to-online ratio. The exactly 1.50 bar counts exact matches only — the bars either side of it are the near misses, and they are near misses because the rule is applied to a rounded dollar figure, not because the rule varies.

Search for a storage unit and you get one number. Look at the underlying listing and there are two: a lower figure and a higher one. It is easy to read them as a range — cheapest unit to dearest unit, or a spread across the facility. They are neither.

Sorting every observation in this database by the ratio between the two figures gives a distribution with almost no width to it:

MeasureRegular ÷ online
Lowest observed1.400×
Median1.500×
Highest observed1.600×
Within 1% of 1.5×81.4%
Within 5% of 1.5×99.6%

A genuine price range would be ragged. One facility would have a wide spread, another a narrow one, and the ratio would scatter. It does not. Every one of the 52,892 observations sits within one dollar of exactly 1.5×, and both figures are always whole dollars.

The apparent spread is entirely that rounding, which you can see because the band tightens as prices rise — a fixed one-dollar error is a large fraction of $20 and a negligible one of $300:

Online rateObservations Ratio range
under $30 5,094 1.4000 – 1.6000
$30–$75 15,327 1.4667 – 1.5333
$75–$150 18,191 1.4872 – 1.5128
$150–$300 11,363 1.4933 – 1.5067
$300 and above 2,917 1.4967 – 1.5033

So this is not a tendency or an average. It is a formula: the regular rate is one and a half times the online rate, and the listing carries a "web only offer" banner to match.

What this costs you. Take a 10x10 at $41 online in Huntsville, AL. Budget twelve months at the advertised rate and you plan for $492. Once it reverts to $61 you are paying $20 more every month, or $240 a year above the figure you were quoted.

We deliberately do not tell you when it reverts. The listings publish the two rates and not the length of the promotional period, so any month count here would be invented. Ask the branch, and get the answer for the specific unit rather than the location.

What to do about it. Ask the facility how long the online rate holds and what it reverts to before you sign. Compare locations on the regular rate, not the promotional one — a branch with a cheap teaser and a dear regular rate loses to a duller one within months. Every market page on this site shows both figures side by side for exactly this reason.

None of this is hidden, and none of it is unusual for yield-managed inventory. It is simply never shown to you as a ratio, and the ratio is the part that matters.

Figures recomputed from the price database on 2026-08-15. Every number on this page is generated from observations, not written by hand, so it moves as the data does.

← All guides · All markets