Michael Haskell paid roughly $10 (£7) for his first abandoned storage locker at the start of 2024, at a New Jersey facility his mother drove him to. The most valuable thing inside was a $40 (£30) CO2 canister, which he sold on Facebook Marketplace. Two years on, the business grossed about $135,000 (£100,000) in 2025 and returned roughly $82,000 (£61,000) in earnings before interest and tax, he told CNBC Make It. It has taken a further $85,000 (£…