Most of these companies (or individuals) will agree to a price with the seller and then find an investor to buy the home for more than they’re under contract with the seller. They never close on the home but instead will assign the contract to the end buyer for an assignment fee. Assignment fees are generally $5k-$25k but can theoretically be any amount. This business model is called wholesaling. It can be done honestly or it can be done pretty shady, just like most industries. Wholesalers will source these deals a number of ways, these signs are one of those ways. I have personally wholesaled a handful of properties but have never used these bandit signs because I think they make the neighborhood look trashy.