Look nowhere except the RX 100 series. I'd suggest an MK2. It should be right around 300-400 depending on used/new whatever, but it's a great camera. I actually disagree with the sentiment that it's on the verge of being too big to be pocketable (though Novus would definitely know because that's who I sold mine to
). It's a very small camera for what it can do. I've shoved my MK2 (now sold unfortunately) in my shirt and jeans pockets more times than I can count.
Emry's suggestion for KEH is a good place to start. Also check Amazon used.