I posted this before and now reposting it.
Yayy I'm so awesome that i'm going to share with you my most important tips for the auction house feature!
If you beat my bids using the following tips, I hate you, lol jk
You don't have to wait at all 30 min or refresh to get your coins back if your bid was outbid , Just open your inventory and sell anything cheap (15-100 coins) straight from your inventory! and Voila! Your coins are back.
PS opening silver chests won't help.
To avoid the additional 0's while you're in hurry, just use the numbers window instead of your keyboard, and while typing your bid, keep your eye on the "bid now" button. It's transparent until your bid is 100 coins more than the last bid, so once it becomes un-transparent, do not add 0's anymore, unless you want to.
This does not always work, but most of the time it does. If you want to know that you're on the lead or not, always have a number in mind (1 to 99) and always add it at the end of your bid.
Example: 15007 coins or 15012 coins
And then when you see your list of bids, you can then know if you're on the lead or not, unless someone added another bid with the same number, then try to use your fb notifications.