It kind of half-gimmick and half not...
As long as those 1's and 0' get recorded to the tape, irrespective of what kind of tape, and as long os those bits can be transferred to your computer, a tape is a tape is a tape -- nothing too special. No matter how high grade it is, it's just recording the same bits of ditigal data.
HOWEVER, where the premium part comes into play is with the robustness and longevity of the tape. Some tapes last A LOT longer than others. Some tapes can be re-recorded over many, many times before needing to be retired -- other tapes can't last but a few cycles before showing digital dropouts/noise.
I think there is more to it than that, but gives you the basic feel for the difference in price.