Two vendors put ROI calculators on their sites. I don't believe either number. The first runs utility billing. I plug in my portfolio, and it promises $170,976 a year in savings. The entire figure rests on comparing them to the cost of billing utilities in-house, by hand, at $43.62 a bill. Name me one shop at scale still billing by hand. I can't either. They picked a fight with a method nobody uses and called the gap "savings." The second is scarier. It's a tenant screening tool. I tell it I run 8,000 units at a 5% eviction rate. It hands me back $1,283,280 in annual savings, an 891% return, and a $25,665,600 increase in portfolio value. The math ties. That was never the problem. Their product is one variable in an equation with at least four. Evictions move on screening, sure. They also move on your collections and policy enforcement, on the local courts (an eviction in Texas and an eviction in New York are not the same animal), and on the quality of the building itself. Better assets draw better applicants before anyone runs a credit check. Screening is real and worth paying for. It does not get to claim the whole result. Then look at the rate it drops you to. 2.33%. Fixed. Read the asterisk, it's their "average client value." Slide your eviction rate to 12% and it still lands on 2.33%. They're telling you their clients evict less, then handing the software the credit. Their clients might just own nicer buildings in better submarkets. That's selection bias wearing a causation hat. A lead magnet is supposed to make me trust you more. When the number is that big, it does the opposite. I don't think "great deal." I think "what did they rig?" The BS detector fires before the checkbook ever opens. Sophisticated buyers don't reward big claims. They discount them. Every one of these calculators is built by someone who gets paid when the number is large, and the buyer can smell it. Want to actually move me? Take my real numbers, find where I'm bleeding, let me verify it myself. Don't tell me, show me.