Kind of depends what you want.
You can get a wallet-on-chain for somewhere around $1500 or an ice cube clutch which is $1195 or ice cube flap which is I think $1600...but it is not at all classic chanel...also, I believe the Chanel LA bag is around $1495. Those are all I'm really familiar with. Good luck..
Agree with kara about the wallet on a chain. It's $1350. I think this particular style is in the timeless classic collection. Another one that I can think of is the Melrose jersey flap. It's approx. $1475-1495..not sure. There is a photo from Jag's SA.
I'm going with a PST, it seems like you'd get a little more bang for your buck vs. some of the other choices. It's a relatively good size, and can be worn more casually. The wallet on chain is also a good choice, because it's gorgeous, but on the smaller side.