I'd be interested in the cargo mat as I already own the front and rear!
I think finding a willing dealer will be much more difficult then finding the last company such as visual garage or any third party for that matter. Most dealers seem to stray away from online business for parts. Considering you can already find the slush mats online for generally ~10% off (justforjeeps for example) plus an additional 5% coupon they usually run for a total of ~15% off MSRP). If I remember correctly theres only roughly another 5% more to play with before its at cost and not worth the hassle of the dealer (for slush mats). Maybe tow hooks have a much larger mark up. Not to put a downer on any of it, as its most definitely worth a shot, but IMO I think OEM dealer parts will be difficult to group buy ELSE we find a willing participant who deals with online orders already. Also you may want to try to find a jeep accessory site, such as JUSTFORJEEPS maybe they will be more willing to work on price and shipping cost? Thanks for trying though! I do hope it turns out and we can find someone willing to work with.
Just to add, for just the rear cargo slush on justforjeeps, with a combined 15% off it still comes to $88.47 after you add shipping. Considering MSRP is ~81, you can just go pick it up at the dealership, add tax and have it come out to be the same or less. Also, usually most of the time the parts desk at the dealer will give ~10% off MSRP if you ask about pricing/price matching. Thus walking into the parts department might be worth a shot if you have a friendly dealership for the mats! How I obtained my front and rear set. As a fyi, I was told my an employee they pay 10% above cost for accessories at this one particular dealership. Granted some jeep accessories are marked up quite a bit like the side steps, but some not so much..
Update- I forgot, another great website, actually run by a dealership from which I got my sidesteps from is jparts.com. However there pricing is already very good but hopefully they could do better?! Check it out OP.
The guys name is Ken if I remember who runs the parts online. firstname.lastname@example.org