The bloom is off self-storage investment, which became a can't-miss opportunity during the pandemic as people cocooned in their homes, built offices and gyms and moved their displaced belongings. But rental prices for new storage tenants are dropping at unprecedented levels, and investors who went all-in in the past two years are now feeling the pain. According to Green Street, self-storage prices for new customers dropped 10% in the first quarter, following a similar drop in the fourth quarter