i dont know whether to break my RS or get it fixed

it needs a new gearbox at a price of 1500 quid - but i have little funds at the mo and wil require saving money

question is how much are they worth in bits do people reckon

even if i get it fixed i wil stil need to look in to gettin a diesel as i wil b commuting to work (lookin at a SMART cdi - 90 to the gallon!)