MacBook upgrades within the repair program would be a win-win
Can You Upgrade the Hard Drive or SSD In Your Mac?
How to Upgrade & Replace an SSD in MacBook Air | OSXDaily
Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
Photo tutorial: Upgrading a MacBook Pro with an SSD
Apple Nerfed the M2 MacBook Pro's SSD! - YouTube
Amazon.com: OWC 1.0TB Aura Pro NT High-Performance NVMe SSD Upgrade Kit with Tools, Compatible with 2016-2017 13-inch MacBook Pro Non-Touch Bar : Electronics
MacBook Air 13" Early 2015 SSD Replacement - iFixit Repair Guide
512GB version of the new MacBook Pro has a slower SSD than the Mac it replaces | Ars Technica