From the announcement, V-Bucks are 20% cheaper (... when purchased from epicstore I guess...).
So, you use your browser, login to epicstore with your account, purchase v-bucks at 20% discount and you use those v-bucks in all Epic Games regardless the platform.
So, you use your browser, login to epicstore with your account, purchase v-bucks at 20% discount and you use those v-bucks in all Epic Games regardless the platform.