There are lots of little ways to amke selling easier, and get more $$$... lets hear yours.
Here are mine:
Always go ahead and specify the shipping charge, figuring its going as far as it can in the lower 48. This lets you close the deal quicker since you don't have to exchange emails about shipping costs, avoids buyers complaining about costs since its clearly posted in the auction, and will sometimes gove you a dollar or so more $$.
Good pics and descriptions are a must.
On high dollar items I always click seller will accept escrow buyer pays fees, and then point out in my description that since it is a high $$ item I will accept escrow. I have yet to have someone actually want to use escrow, but numerous buyers have mentioned they felt better about bidding since I was confident enough in my merchandise to accept escrow.
I always make a point to tell people to be sure to check my outher auctions in my description, not sure how much it helps but it can't hurt.
And I love paypals auction services, makes the whole deal easier.
Lets hear yours!