Home after 7 months sailing I set about getting my spares together for the spring, I visited RK marine in Bursledon, in UK. And was surprised at being charged £30 for an impellor, I refused to pay it. Set about looking for sensibly prices parts and found a company ( yacht Boat Parts) Over the road from RK Marine and purchased 2 for £23.
I have no connection with this company, just thought it sensible to let others know of them who live in the UK. Put it into google.
Hope this helps
Odysseus
Bav 38
Keypart just over £15 with free postage offer