Hey, I'm currently Diamond 3 with a 55% Winrate. I would boost either on weekends or soon in my autumn holidays (September 30 - October 14). At best would be a boost between Bronze 5 and Platinum 5, as I can guarantee up to this Elo a very high winrate. The price depends on your current Elo and your gained elo per game and can be negotiated. (Offer not only a division boost, but also a pay-per-win boost.) If you are interested you can add me on Skype: florian66880 or on Steam:
adden.