These guys do 100 minumum:

https://stompstickers.com/collections/custom-brewery-labels/products/32-oz-crowler-labels?variant=31565892649073

But while the MOQ for some of the other vendors is 500, it's not much more expensive than the 100 MOQ.

I've used Neato labels before for bottles. They're vinyl, which is nicer than the Avery paper lables. For a Crowler you pretty much get one label per sheet, unless you're getting them printed on a roll.

https://www.amazon.com/Neato-Blank-White-Printable-Labels/dp/B01FKXOJOY/ref=asc_df_B01FKXOJOY/

Late to the party, but: these labels have been my go-to for over a year now.

Personally, a little more expensive than the Avery stuff, but way more durable and they look hella nicer.

Also, you can contact Neato directly about buying in bulk and they'll cut you a sweet price break, plus free shipping (although, not 2-day).

And waterproof (to a great degree).