Rollers are one of the more approachable garage door repairs, and plenty of Palmetto homeowners could do the bottom rollers themselves with the door disconnected from the opener and the springs left alone. The top rollers, near the torsion spring and cables, are a different story - that's where a DIY job turns into an ER visit if a cable lets go while you're up on a ladder.
Our honest limitation here: if you're only replacing one or two bottom rollers on a door that's otherwise in good shape, that's a reasonable weekend job for someone comfortable with hand tools. We'd rather tell you that than sell you a truck roll for something you can handle safely yourself.