Changing out belts is always a PITA, but most people I know usually cringe at having to buy a new one... belt maintenance is paramount with regular scrubbing with "desert boot sole" material.
Bulk buying rolls is economical and if you can split the cost it's even more... just make yourself a cutting jig and the only PITA is opening, closing and finding a resting place for the jig.

If your first cut is too short... Take the second cut from the longer end... LBD