This is a jobsite-style worm drive table saw designed for torque and portability. An oil leak is a meaningful repair item because the worm drive depends on correct lubrication; running low on oil accelerates gear and bearing wear.
Repair is usually the right call when the leak is from a seal or gasket and the saw hasn't been run dry-because replacing seals is typically far cheaper than replacing the whole tool. Replacement becomes more sensible if oil loss has already caused noisy bearings, rough startup, or inconsistent blade speed under load, indicating deeper internal wear.
Also consider the condition of the fence and tabletop: if the saw can't hold alignment and the drive is leaking, it may be throwing good money after bad. Pricing reference: typical retail listings for SKILSAW SPT99-11 at major tool retailers.