I saw in the news today people are buying (or selling) JPM straddles. I wanted to long some straddle too. However, is there a way to figure out whether the quoted price is already too high or not? If the quoted price is already too high, maybe I should short the straddle? The InteractiveBrokers TWS Option Trader and Spread Trader don't provide much insight here to help me make decisions, any more thoughts about how to make decisions about buying or selling straddles? Thanks a lot!