Pay Attention!
Keep an eye on how many other players are bidding on the item you wish to bid on. This could be critical in coming up with the low, unique bid that you need to win!

Flexibility
If you bid too high, you could easily lose to someone that has bid way lower than yourself, and increase your risk of overshooting them.

On the flip side, you could bid too low as well, and end up bidding the same price as many other players.

Try to adjust your bidding price based off of the amount of players bidding, and come up with a good medium. This can help you guess a good price.

Unique
Another thing to keep in mind is the number itself. Is it something other people could commonly come up with? Try to be unique in your bid choice, as this may be the winning factor!

Adjustment
You should make a good decision for giving a good price. Remember that the highest or lowest price may not even win the auction, so concern yourself on the number of bidders you are going against, as well as ones bidding in your range, then change the price to something more suitable. Especially towards the end of the event, changing the price to the correct unique number can be the factor needed to win.