솜사탕 자판기의 투자 수익률(ROI): 2026년에 실제로 얼마나 빨리 수익을 낼 수 있을까?
Three months ago, a barbecue restaurant owner in Austin called me with a question so specific it stuck: “If I put one of your machines next to the cash register, am I making real money by Labor Day or am I looking at Christmas?” He’d already done the back-of-napkin math. A $5,500 machine. A restaurant […]