Try this. Pick up a rock -- could be anything from an emerald to a chip of glass -- put it in your pocket, and walk into the local jewelry store and ask them to assess its value, without taking it out of your pocket or telling them what it is beyond "a rock". (Yes, respectable jewelry stores will do a cursory assay for free. It's part of the business.)
This is essentially what you are asking for here. A plurality of Jeter cards, possibly rookies. No actual identification (brand, set, year -- and it is entirely possible the cards you claim to have would fail the "rookie" descriptor), no mention of physical condition (very important). You're offering for our perusal, an undisclosed rock.
Could be worth 25 cents, could be worth 25 dolllars. Maybe even more, maybe even less. And that's the best that can be provided given the information available. You're welcome.