Not much, not worth it...
We have an agreement w/ SWA, which I believe is their standard - $50 per segment, STNBY priority.
We have another w/ DAL, I believe, which we can use for int'l flights. Can't really remember the fee, but probably similar to ZED fares.
ATA gives us a deal as well, but as we know, ATA doesn't go to too many places anymore. If you are in a city that they serve, that might be a possibility.
Personally, it is so hard to nonrev nowadays due to flights being so full, one is smarter just to buy a ticket. If you plan ahead, you can get good deals while having a seat. You also have some bumping protections as well.
Non-revving, unless you are by yourself, just isn't like it used to be...
If you need specific fees for UPS, let me know and I'll try to find them.