This is the same type cyanoacrylate glue that Dr's and veterinarians use for sutures. An equivalent to this glue is "Vetbond tissue adhesive".
They sell 0.1 oz of that for about $20.00. We have 1/2 oz bottles (5 times as much) for $11.95.
n-Butyl fingernail glue is different from standard types of fingernail glue, (ethyl cyanoacrylate). It's less brittle, and has no irritating odors. It's very thin, wicks very well, and when used correctly, it makes a great, durable fingernail glue. Also works great as a nail hardener/protector for natural nails. Add some wrap and n-Butyl glue to the natural nail to make a tough, durable fingernail.
It's very important to wipe the top of the bottle thoroughly after use, as it has a tendency to stick the cap to the bottle if you don't. It's best to store this glue upright, in a cup. And if you want to travel with it, you can put some into some pipettes, and put those in a plastic bag. More info on our n-Butyl cyanoacrylate glue on our tips page.