Given that consumer hand gel is basically just IPA diluted down to 60% (see edit), I also bought a few tubes of aloe vera to mix it with... I suspect a lot of other people had the same idea.
It looks like there's a lot still available on eBay, so if you really want to by sanitiser, you might as well make your own. Just remember to dilute it a little, 99% won't do too much damage, but it's not particularly kind to your hands if you rub it in on purpose. It's also extremely flammable!
EDIT:
The WHO has published guidelines on making your own gel: https://www.who.int/gpsc/5may/Guide_to_Local_Production.pdf
Interestingly Wikipedia seems to suggest that you should use at least 90% alcohol to kill flu. And that lower concentration formulations are potentially ineffective because they evaporate before killing stuff off. Hospitals use 70-95%. Obviously the higher you go, the more flammable things get.
https://en.wikipedia.org/wiki/Hand_sanitizer
This article tested a number of gels vs rinses:
https://www.thelancet.com/journals/lancet/article/PIIS0140-6...
> Based on our efficacy data, we do not consider any of the tested alcohol-based hand gels to be suitable for hand antisepsis in the health-care setting because their antimicrobial efficacy may be insufficient to prevent the spread of pathogens. Future ethanol-based hand gels used in hospitals should contain at least 80% (v/v) ethanol as the active ingredient and should be as effective as the EN 1500 reference alcohol within 30 s.