my experience
Boosting service overall - 8.5/10
Hi there, i recently ordered this boosting service and we started first day after i ordered it, delivery of 200 elo took 3 days, if you order it don't expect them to always be available to play with you, as they've got other customers, if you order here, it will take a couple of days, but it's worth it for the fact of how cheap it is unlike some other services which would request much more to pay, we lost a couple of matches and they took it normal, we just continued grind till we got my account to requested elo, beware of on the beginning, you'll be asked to pay a bit more, which is optional, this could be a bit less harsh and they could kindly give you a bit more elo by paying 10-15 dollars more than it's mentioned
(as said, it was optional, they just asked since i guess they split the money between other boosters that played in my lobby which doesn't end up to be alot for each booster for spending hours in video game)
Communication with main booster (VALLYBOOST) - 10/10
This guy will respond you no matter when you send him message, you're his customer and he knows he has to finish orders as soon as possible with their customers, he's actively using microphone in-game aswell, and makes some crazy pistol round tactics that will 100% work.
Communication in-game - 6/10
Now this is something that bothers me the most, since it's just "main booster" who basically speaks up and gives info when he dies or perhaps gives info where enemies are when teammate dies, i'm not sure why do the rest of boosters stay quiet and not give info where they died from at all, that's like 90% of the time, they will make a play but if they die somewhere it's most of the time a guess for you where enemy specifically is if you stood behind the booster who just died.
Teamplay - 8/10
I'm not totally sure with how many boosters i played, whether it was 3 or 4, their play style seems to be a bit off sometimes but they're confident with pushing enemies even if teammate or two died, they'll try their best to win rounds, oh and just don't buy smoke if you play Mirage with them

, but hey at the end you get what you paid for.
Conclusion
I paid 45 dollars with +15 dollars optional so 60, this service is totally worth it if you're not obsessed with the game to play by yourself and throw away all the elo you just got by playing with boosters before waiting for the next day to happen and continue grinding, be patient and nice to them, they don't need your help with utilities unless Vally calls tactics, then do as it's said and you'll win atleast 9 of 10 matches, listen to Vally and you'll win rounds!