@Nine hey, they're chrome tapes, so they're not bottom-of-the-line ones! (there were four different formulations; type 1 or ferric was the cheapest, then type 2 or chrome was better quality, type 3 or ferro-chrome was not really much better than type 2 and was pretty short-lived, and then type 4 or metal was most expensive and highest quality)
@Nine Type 4s weren't cheap either but the quality was quite good so they still did fine
I think the only magnetic tape being made now is type 1 though, just because the kinds of people who want type 4, especially who'd choose it over CDs, are few and far between