There are 2 halves to this game. 1st you spend money on property cards. Then 2nd half, you trade property values back for money. The trick in the 1st half, is knowing when to sacrifice a lot of your chips. Look at the property cards and decide if they're really worth spending a lot chips. Because remember that if you pass you get half your chips back, therefore getting a much better price than the person who wins. ONLY the winning bid pays their full price. Everyone else gets 1/2 back. Also make note that often it is rounded DOWN. So if you bid and odd amount like 5, you will only get 2 back if you are not the highest bidder.

Also assess WHEN you have to bid in turn order. If you bid last, typically the costs will be higher. If there is a 30 and you can get the 15 for free by passing vs bidding 5 or more, then that is often a better move. Save your money for later rounds. It is EASY to run out of money!

Often the coins are visible. If you see that you have equal to the highest amount of another player, you can bid that and they cannot outbid you.

Remember what people have and what they've played already. Try to remember the highest property cards ... 20-30, in relation to what you have in your hand. Knowing you have the highest or 2nd highest card left, helps. If you have the lowest properties numbers, then if the cheapest dollar card visible is decent (above $5), then that might be a time to play the lower cards. Even if you are last, you will get something decent.

Consider your turn order. Since the winning bid goes first, one strategy is to bid high early to secure the first bid in the following hand. A high 1st bid may discourage others, but can result in you overpaying when nobody follows your initial bid.

When selling properties back in the 2nd half of the game, try to assess all the visible cards. If the dollar cards are: $15, 14, 13, 12, 11... well there is little difference between the highest and lowest. You wouldn't have to give up a big property for relatively similar money. If the dollar cards are: $15, 14, 3, 2, 0.... well you want to try to be one of the top 2 highest.