Matiz Sump

Hi, Just bought a 2000 Daewoo Matiz, and am aware of the car having a porous sump. This needs repaired, any ideas?
Alternatively, a new one costs £55.00 from a main dealer, anyone know if I can get one anywhere cheaper in Scotland or other in UK with postage options, and also an idea of Labour charges to fit - my local mechanic reckons about two hours?
Thanks..............