RepairPal Certified shops can diagnose and repair your 1999 Subaru Legacy. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
With the age of your car, it does make sense to source a good used transmission from reputable part supplier (LKQ, etc.) which would run anywhere from 400 to 800. R&R on transmission is about 3-5 hours.
all wheel drive
you could be looking at as much as 5000.00 trans and labor