The reverse on your manual transmission 89 Saab 900 just went out and the mechanic said it would be about 1500.00 to fix Does this sound about right and do you have any other options?

Saab 900 transmissions can be expensive to repair. The entire driveline (engine and gearbox) must come out to make most internal repairs, and the replacement parts are not cheap. 1500 $US sounds about right for the labor involved (depends on the hourly rate). However, sometimes an errant reverse problem may be repaired with the gearbox in the car. A good Saab mechanic will know how to do that. Do NOT take a Saab transmission repair to an all-encompassing repair shop as they will likely not have the tools nor the expertise to do the repair correctly and it will end up costing even more in the long run. - - - - - Being a Saab and being an 89, parts to fix it may be outrageous in price..... It's a good chance that may be a fair price. Other options would be try to find a decent used transmission. You can google "Used transmission, 1989 Saab 900" or search salvage yards. You may or may not find a transmission, but you never know til you try.