I’m not a fan of the Glubot glue bottle. When I first got it, I couldn’t get any glue to come out of the nozzle. (This is using Titebond II woodworking glue.) After trimming the nozzle back several times I finally got an adequate amount of glue.
However the bottle is stiff and hard to squeeze. It doesn’t really work well upright (which is the whole point of this design).
In retrospect I should have saved the $10 and bought a mustard squeeze bottle for $0.97 instead.