I have had their prickly pear jelly. Don't bother. Much of their stuff is really good but they do have some 'dogs' too. Their Mustang Grape jelly is excellent. Too pricey though. Some people have allergies to that anyway. Buc's does improve products many times so even if I say it is no good, try it anyway. They do change. Slowly.
I've never tried the Mustang Grape Jelly, but we will definitely pick it up next time, for the experience, like you said, a lot of their products are a bit pricey, but it is a convenience store, so I just have to chalk it up to that lol Some of their Jelly's are really interesting flavors that we just want to try, but never thought about trying the Grape, it's on our list now, Thanks!