but you need to tell us more about what you need, with some photos.
I have a feeling that there is probably a kitchen unit of some kind under the sink, and the door has fallen off, probably due to a loose hinge or water damage, and that you want one to match the other doors in your kitchen.
Thanks, the one on ebay says " Free Hinge Drilling" what does this mean? does it mean there are holes already for the hinge to go into? thanks. I like the ebay one as theres no handle to put on it as it has a place where you pull it out at the top.