My local hardware store doesn't make it easy to buy starter fluid, especially the kind of starter fluid with ether. I have to show my ID to buy it, along with gold or silver metallic spray paint. I accidentally oversprayed some ether-based starting fluid one time and my head was spinning for hours. I can't see how anyone could stand breathing in those fumes every day.
I agree with Phaedrus that starter fluid is not compatible with fuel injection. I only use to spray it into the air intake of a carburetor, and that was when most cars had one. Now I'll just let the car rest for a few minutes if it won't start. The engine is probably just flooded with gas.