They are $70 and dont even have great reviews on amazon.
I’d not give too much weight to Amazon reviews when it comes to music gear.
As far as TI goes, their strings are very low tension and have a fairly mellow tone compared to most rounds. You like it or you don’t. If you play with a heavier hand, like extremely low action, or are after an agressive sound, TI Jazz Rounds aren’t going to do it for you.
I personally think they sound and play great on most JBs. But that’s me. YMMV.