I love the posters who have no idea what you’re talking about but still feel like they should respond.
$38 at REI for a tubolito I may never use as a spare for my mountain bike tubeless. Seems steep and the reviews are mixed. Definitely a little concerned that if I came across something that would take out my tubeless setup, that a tpu tube coupled with a field boot wouldn’t get me home.
At this price, it almost seems worth trying. And a month from eBay isn’t bad at all.