Milwaukee's M12 FUEL compact band saw is a portable cutter for conduit, strut, and small metal stock-popular with electricians, HVAC, and maintenance crews. Blade tracking problems are often adjustment-related (guide wear, tracking hardware, tensioner issues) and can be corrected without major parts if caught early.
Repair is usually worth it when the motor runs smoothly and the issue is isolated to guides, tracking, or a belt-parts that restore straight, safe cuts. Replacement becomes appealing when tracking issues persist despite new guides/tension components, the saw has bearing noise, or the frame has been bent from drops.
Since these tools often see daily transport, physical damage is a key tipping point. Price used is a typical tool-only retail price; kits with batteries can change the replacement baseline.