1100 Sierra Madre chips in the dropoff box at Elijah's room in the bunker every 3 days with the complimentary voucher. That is 55 weapon repair kits every 3 days. Beside the remnant power armor and the other Enclave sets, I don't see any point in having it anymore.
Sometimes you got to repair on the go, and I just love jury rigging. Its essential for my playthroughs now.
Good option for non repair orientated characters though, so thanks!