Around here, stolen bikes are done by snapping the steering lock, then driving a screwdriver into the key lock. So when the bike is recovered; you have to replace the key ignition regardless. Nothing stops a meth-head or crack head....or two big motherf.... with a van or truck!
Maybe we are miscommunicating? The OEM replacement full floating rotors should only be around $500. The full kit with bigger rotors, calipers, etc..is around $1,500-$2,000. Here is that kit getting ready for a different bike.
Just the rotor are not much more than OEM style replacements by EBC. You have to call or email them for the price, as it's not an advertised part. They supplied them for some old school gsxr's running the TT events.
Some will also do custom.
https://jb-power.com/en_us/products/carburetor/
https://www.sudco.com/
https://www.allensperformance.co.uk/
https://japan.webike.net/