Mockinbirdiva, Dutch are my favourite too! Super healthy, perhaps due to their middle of the road morphology, + loads of personality. But everybunny needs a home.
finchly, go to binkybunny & ask LittlePuffyTail about grinding costs. She had a lop for years (he has since died) who needed this every 4-6 weeks. Cost depends in part on how much if any anesthetic they need. Consider whatever she says a base price. She lives in the maritimes, where everything's cheaper. I'd also ask the vet who did the procedure what the typical cost would be.
If you're interested in the Kong dog crate route, which looks a lot easier than Destiny's solution
, here are the crates in question:
KONG® Dual-Door Rust-Resistant Dog Crate | dog Carriers & Crates | PetSmart
I would only consider the two largest sizes, depending on the bun's size. The bar spacing works for mine & Daisy has a very petite, slender head, so I'd be surprised if it didn't work for that lop. Hard to judge rabbit size in a photo, so keep your receipt & box, just in case.
Then you just need a litter box, water bowls (I use glass loaf pans, as they're hard to move/ tip & fit nicely against the pen), food dish for pellets/ veggies/ treats & toys.
Yes, tka is right about diet! Most people recommend timothy hay, but mine prefer orchard grass & eat way more when offered it. It also is softer (no splinters!). Find a store that will get in the 9 lb boxes of Oxbow timothy or orchard grass, or Sunseed Sunsations natural timothy hay mini bales - 4 mini bales that are 2 pounds each & actually have flakes, like for horses, only mini. If you have space, there are 50 lb boxes of Oxbow timothy too.
These are the most economical ways of getting less dusty, processed for indoors hay (ie: not giant horse hay bales, which are way too dusty anyway). Ren's Pets carries the 9 lb boxes & my local feed store, Ritchie's Feed 'n Seed, carries the 8 lbs of mini bales. There are sometimes local options too.
There used to be a "Meadow Approved" large box of hay + apple sticks from their orchard here locally. Unfortunately, like many small businesses, it didn't survive, but while it lasted, it was the best. Meadow was their spokesbun. It was just as cheap as the above, mass market products with just as good quality and low dust, but with bonus, organic apple sticks. There might be such a local option where you are too.
IMO, the best litter, hands down, is Carefresh. It's the most absorbent & is soft. Depending on how much this bun goes through, you may wish to consider shredded aspen. NEPCO is the best. If you're anywhere near a university, the local feed store will likely carry it. It's used in a lot of labs. If not, ask there where they get it. It's the best compromise between cost & efficaciousness.