To be fair they did buy it. If you disable your support account then also write a fat bold and _short_ statement such as: THIS IS PROVIDED WITHOUT ANY WARRANTY

To be fair they did buy it. If you disable your support account then also write a fat bold and _short_ statement such as: THIS IS PROVIDED WITHOUT ANY WARRANTY AND NO SUPPORT WILL BE GIVEN. And don't hide that inside 1, 2 or 50 pages of text of course. Then it's all fine. If you don't, then support is going to be expected, no matter the price and that makes complete sense to me.