If u have an item for sale but the bids don't measure up to what you are willing to let it go for, what can you do? Can you refuse the sale?

Just because the early bids aren't what you expected doesn't mean that your item will sell low. Many people snipe bid and don't put their high bids in until the very end of the auction. It can actually be fun to watch the bids on a item jump way up in the last few seconds  In the future heed the advice from the other posters and list your item at or a little below the lowest price you are willing to take. You will spend a little more on fees but it will remove that worried feeling as you watch your item get stolen for next to nothing. NEVER list with $0.99 opening bids. It attracts bottom feeders of the worst kind. It can also scare away good bidders because your listing may get a lot of early bids and this may make some bidders think there is too much competition for the item and they will go looking for a less busy listing.