A local hydraulic shop can make the hoses. You may have a repair shop that will do the job and depending on how the hoses were run; it may be less costly to leave some in place and just run new ones. $1700 for 8 lines installed is not unreasonable.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7