Touched it and then it broke.

[Billy Mild]

I was poking around the engine bay to see if the car leaked anything before I get my inspection done tomorrow. While I was looking around the engine bay, I touched one of the hoses for the coolant expansion tank. The fitting broke off. I barely touched the freaking thing.

I used some JB Weld Metal epoxy so I could repair it for now. Will this repair last? How much is a replacement tank? I'm supposed to get a coolant flush on Friday.