It's a fine product. All the epoxies are pretty much the same. You can find less expensive alternatives at Home Depot or boating stores, but it's probably not worth the effort or risk unless you're buying large quantities.
Many first time users do not understand it however. It's not going to hold weight until it's fully cured - so you must support the object you are bonding.
For instance I once wanted to mount a monti cap to a cliff of rock so that it would grow naturally from the side. I had to use some other rock to support the cap for 24+ hours until the epoxy was fully cured. Then remove the rock from under the cap and the thing eventually grew over the epoxy and attached itself. Looked fantastic.