Fiat punto,s are well known for this problem even at such low mileage.
£600 pound is about the right sort of price as long as this includes all labour and oil and v.a.t otherwise if its 600 plus the labour and oil and v.a.t its rather expensive.
Also at 600 it wont be a new gearbox it will be a reconditioned one.A brand new gearbox from fiat would be approx 1500 to 2000 plus labour and everything else.
Richard
rbtransmissions@aol.com
richard, January 2006