QUICK - what is ebay ettiquette/rules regarding ending auctions early?

[SlightlyAngrySlug]

Hi,

I have always thought it was a no no to end an auction early because a buyer wants to 'buy it now' but without a 'buy it now' button IYSWIM. When I told a buyer this they got snotty and told me I was wrong. I havn't done it since.

I now have another item where a buyer has asked me if I have a price in mind. If I tell him and he asks me to end early at an agreed price am I breaking ebay rules? If I am breaking rules is it really bad ettiquette?
(I plan to tell them that my reserve is XX, I have YY watchers, but for a bit more I will end the auction for you)

What would you do?

Set up a viewing with cash on collection if they want it.
If they buy it there and then, end the auction early.
Always take cash on collection for items not going through the post, otherwise a buyer can claim they haven't received an item.