Me and my friend are currently boosting d5-master.
We have both boosted on lolboost.net and eloboost.net, we have on both had 85%+ winrate in diamond out of 500 games, and 80%+ in master out of 200.
We are both 2 very dedicated booster, and elo-boost.net + lolboost.net are very happy to have us working with them. Sadly there aren't orders 24/7 which is why we want to sell ourselves.
Examples of accounts we've made:
Diamond V-Diamond I = 80e / division
Diamond I-Master = 100e