Why buy yourself towards the top, what's the fun in buying your way to the top of a game, whole point of gaming is to farm, grind and make your way towards the top and most games give you the platform to do just that
Some people just want to be the first and it's not matter how they'll do it. Some of them just haven't enough time to farm & grind to become a top player (it may take too much time) & they want a strong character here and right now. Some of them are spoilt kids of rich parents. No matter what the reasons are. But without a doubt, this service will be in demand.