In case you are wondering how much it costs to get a crew through beer, here is a table that shows the prices. The cost is based on the number of epic and hero crew you have. It goes up and down by the total number you have. This doesn't imply you will only get them, since uniques are thrown in the mix when you use the beer draw.
Also it is my understanding that the cost is capped at 500 after you have 17 epic or heroes crew on your roster. Just as a reference, each step is about 10% of the previous value
Can you double check the calculation of 4+. It seems that it's only affect by heroes because I'm quite sure that there was a point wherein I had 500bux cost on the 3+ draw while still not having 1.5kbux cost on 4+ draw.
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