Indesit idl40 s not draining,new pump needed ???

Hi we've a indesit Idl40 s dishwasher and for the past few months we've had a problem with the water not draining out. After looking on the net for a fix I thought maybe something was stuck in the pump. So after taking it to bits and cleaning the pump I didn't notice anything obstructing it The water is still not draining properly after checking the draining hose was clear I noticed that when placing the hose on the floor the water started to drain out from the dishwasher. So I take it that means the pumps gone ??? Anybody know how expensive they are?