Cheapest place to buy the RX100?

I'm so close to buying this camera to use at concerts when DSLRs aren't allowed. I have two concerts coming up, and I want to sell my Sigma 10-20mm to buy this camera. I'd still have to pay like 250 though. The cheapest I've has been Best Buy 540 for an open box RX100. Is there any other store that has it cheap?