Storage ads are built to look cheap in month 1. Insurance, an admin fee, and a later rent increase usually sit on top of that teaser. None of those extras have to appear in the big number they showed you.
The hike is not a rumor from one bad week. A Seattle renter reported Secure Storage going from $142 to $218 after two months. In the Bay Area, people described an intro rate that became two or three times higher within a year. In Los Angeles, renters asked who would not double the rate every six months.
Slate wrote about the same pattern in January 2025 and gave it the industry name: existing-customer rate increase. Operators at an industry session described first hikes from about 20% to 100%, then more increases after that. One renter in the story started at $45 and was paying $220 in less than a year.
Some facilities also bill every 28 days instead of once a calendar month. That is 13 bills a year. If they quoted $100 “a month” on a 28-day cycle, the calendar-month equivalent is about $108 before insurance or admin. The calculator has a toggle for that, and the 28-day billing page walks through the extra bill.
The 50% and 100% bars on the receipt are estimates from that reporting, not a prediction for your ZIP. Use them to decide whether the promo is worth signing before you have a written rate lock.