FWIW and late to the party:
Just picked up a 2016 Landmark HD two months ago with 104k on the clock. When adding mods it boils down to math for me...
On cars and bids a 2014 with some light mods went pretty high:
https://carsandbids.com/auctions/rbpn5yEk/2014-land-rover-lr4-hse
Looking around cargurus, etc. you find that HD packages are in the 30-40k range (not sure if OP has an HD or what year car theirs is but math works the same with whatever your base car is).
I walked out the door from the dealer at $37k and then did fluids, winshield, control arms and tie rods before I took ownership.
Since then I went Proud Rhino slides, Lucky8 gas tank skid, front runner front skid, terrafirma rear carrier (which is awesome for the money OP), and 5 compos with 265/65 KO2s, then swapped stock silver rails for black and did some preemptive maintenance.
I'm now into the car for $45k. Probably $10k over what I can get for it.
So now comes the question: is that $10k "loss" worth it to me?
Well, I'm sitting in CO right now after driving from NH last week. There's 6 pairs of skis in the back and a mtn bike and still room for the dog's bed. I drove through that storm on the east coast last week and next week am going to run Fins and Things with the truck. I will put about 10k miles on it during the trip and with a D5 at 80k sitting in the garage (also HD package) I may just punt the truck when I get home in March. So that's $1 per mile to do an epic road trip and use every bit of the truck's capabilities. Sounds like a bargain to me.
So, get the damn bumper if you like it and will use it - and the math works for you.