How much will it cost to get a new gearbox?

Excuse me, could you please provide me with an estimate on how much it would cost to replace a new gearbox for my vehicle? I'm in need of a replacement and would like to budget accordingly. Is there a general price range I can expect, or does it depend on factors such as the make and model of my car? Additionally, are there any discounts or promotions currently available that could potentially reduce the cost? I appreciate your assistance in this matter.