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Storage Promotion Comparison Calculator

Compare two storage offers across the full billed stay, including introductory rent, regular rent, recurring extras and one-time fees.

MoveDayPlan Editorial Updated

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Range: 0–120 periods

Range: 0–120 periods

Range: 0–1,000,000 USD/period

Range: 0–1,000,000 USD/period

Range: 0–1,000,000 USD/period

Range: 0–1,000,000 USD

Range: 0–120 periods

Range: 0–1,000,000 USD/period

Range: 0–1,000,000 USD/period

Range: 0–1,000,000 USD/period

Range: 0–1,000,000 USD

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Set up the calculation

Choose the same unit requirements and stay length before comparing prices. Enter the number of full promotional periods promised in writing, then the regular rate after that period. This model has two rate stages; a schedule with several different discounts needs separate segments. Enter quoted taxes for the complete stay once in fees. The displayed comparison changes when you extend the stay, so save a short and a longer scenario.

Total = introductory periods × introductory rent + later periods × regular rent + all periods × extras + fees

Worked example with stated inputs

Conditional inputs, October 22, 2026; not a quoted market price
Input assumptionExample value
Total billed rental periods 4 periods
A: number of introductory periods 1 periods
A: rent per introductory period 20 USD/period
A: later rent per period 100 USD/period
A: recurring extras per period 10 USD/period
A: total one-time charges and tax 30 USD
B: number of introductory periods 0 periods
B: rent per introductory period 0 USD/period
B: later rent per period 85 USD/period
B: recurring extras per period 10 USD/period
B: total one-time charges and tax 20 USD
Results from the displayed formula; money is USD
Calculated resultExample output
Whole billed periods 4 periods
Offer A total 390 $
Offer B total 400 $
B minus A; negative favors B 10 $

Rounding and model limits

Model assumes one introductory rent followed by one unchanged regular rent. Billed periods round up; fractional introductory entitlements round down. Recurring extras apply to every billed period. Fees remain even with zero periods if you enter them; clear fees for a canceled zero-cost scenario. Enter quoted total tax once in one-time charges, not in recurring extras too. No automatic proration, provider rate guarantee or promotion eligibility. A free introductory period has rent zero; future rate increases require a revised scenario. Refundable deposits and travel are excluded. Prices are user inputs, not market rates.

Is the cheapest first month the cheapest storage stay?

Not necessarily. The worked example makes A lower over four periods, but over six periods A costs $610 and B costs $590. Both scenarios hold regular rates fixed only to demonstrate the arithmetic; actual rate changes need another calculation.

Can I reuse these defaults for a real booking?

Replace them with measured inventory, your written quote and the actual billing terms. The example exists to make the arithmetic reproducible. Save both the input values and the provider document date when comparing alternatives.

Reviewed October 22, 2026. All worked values are explicit editorial scenarios. Sources explain relevant product or provider context; they do not supply these default rates.

  • Public Storage — Storage Deals and Discounts — Promotions have offer-specific eligibility and location restrictions. Read the actual agreement for fees, tax and billing terms; numerical examples are not advertised offers. (Checked 2026-10-22.)

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