Hi Irish Bhoy,
I wish more sellers would sell themselves, so that buyers know exactly who they are dealing with and not have to put up with the rudeness of EAs, who, by the way, have no idea how to actually SELL a house, due to the fact that the last couple of years they have just stood at the door and let bidders fight over them.
In saying that though, I agree with extopia in the sense that they will have to be willing to do evening viewings, weekend viewings, and they may run into 1/2 silly people. If they price realistically however, it could be gone in a jiffy & they will have saved themselves a bundle.
Make sure they do all sites. Daft, My home, sellityourself & private seller. Make sure there is lots of pics(don't know how many houses I've looked at on-line with 1 bloody photo(EAs at work, my behind), garden, bathroom, living room, etc. Include which way the house is facing. Include if garden is private over overlooks a green. Things like that. Tell them to try their best with measurements of rooms.
Good luck