Exactly. What's to keep the sellers from just jacking everything up?
College was expensive, but affordable, until the government made it easier to get student loans. Colleges responded by wildly jacking up their prices, and now you literally have to voluntarily take on a lifetime of debt to get a college degree for a job that probably won't cover the cost of your loan. And what did the government do? They went right along with it, and demand repayment before anything else.
They recently started a benefit program with Medicare that gives you some money each month to buy health related items in drugstores and such, and they responded by jacking up the prices in Walgreens and CVS.
I'm all for UBI as well, but it has to comes with price controls so the corporate parasites don't just take it all. UBI Gouging has to be a harshly enforced crime.