People who are willing to pay for relays, don't mind paying 50¢-$3/month for one. The prices are negligible. Less than the price of a cup of coffee. People wanting to pay 3¢ to post three times per month are a tiny market of people who actually just don't like paying for a relay and will probably do it once or twice and then stop, leaving you with the fixed costs and the overhead. They're the market segment equivalent of those people who will drive 10 miles out of their way to get 2 packages of butter for 50¢ cheaper and purchase nothing else. They'd rather spend $2k on a new PC or a top-line iPhone and self-host, to be honest. It's simply not a market that makes any sort of economic sense because their aversion to paying isn't about the price. They don't like paying other people for IT services. Full stop. I prefer to just offer them the lower-quality freebie version and not have to bother haggling with them over whether it should be 3¢ or 2.45¢. There are Class A, B, and C customers. Pull out all of the stops for As, offer the Bs a bare-bones el-cheapo version, and let the Cs scrape along with the freebie version. This goes into the classic 7Ps of marketing.