I filled this earlier today for a $98 credit.
The current metrics are:
Probability of Profit: 72%
Max Profit: $90 per contract
Buying Power Effect: Undefined
Notes: At the suggestion of FractalTrader (that you very much for your ideas, by the way), I'm playing around with what I can do graphically here with options setups, so that it's easier to visualize where price has to "sit" for the duration of the setup.
If you have traded options before, the vast majority of platforms display a range of prices horizontally, with prices below current price on the left, current price in the middle, and prices above current prices on the right, so it's a bit of a challenge to adapt an options platform view (which only consists of a horizontal "price axis") to a chart.
In any event, this is a short strangle, so I want price to remain between my two short option strikes for the duration of the trade -- above the 23 short put and below the 31 short call ... . I'll look to take the whole setup off at 50% max profit.