ALWAYS switch perks depending on what gear you are buying. Switch to medic before you buy body armor. Switch to support before you buy a shotgun. Switching perks is instant and unlimited in between waves and the discounts apply immediately. This will save you a lot of cash that you or your team might need later on.
you will need to remove this now. Tripwire have considered this an exploit and have changed it so that you can only change perks once per wave, preventing this from being possible.
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