I hope they dump out the sauce and wash the jar. I don't want to think of 10-year-old jars of sauce with the lid popped up showing obvious pathogens on the inside sitting on people's shelves as collector's items.
If this was in a store at the same price as normal sauce I'd definitely buy it because my partners a huge fan and that way I could get some and it'd be a reasonable price for the nerd shelf.