What is worse is that there is just no reason not to have your own domain. Get over it. Working your way through any respectable sized list of potential hosts, you can find someone who can give you all the space you need for cheap. And next year, it will be cheaper. And more so the year after that.
Frogs can die in water that starts off comfortable and is heated to boiling temperatures.
For your business' sake, jump to a new, safe haven that you can call your own. Do it now. We offer hosting that can accommodate even modest budgets. Please don't take this advice as coming only from an angle of selling you something. If you don't see what you want from us, go elsewhere.