i paid 400-500$ for links services , and i told him after 2 weeks to take all the links out and to keep the ****ing money,
however he did what he promised but his seo techniques were bad, my site suffered from the first week.
however i’m not that kind of guy who cries for his money, but i was aware about the risk …it wasn’t relevant for me … this was 4-5 months ago …. and i sweared to mother russia that i would not buy a single ****ing link ever … there is so much bull**** and i don’t believe in this **** anymore ….
well i’m not russian lol … i just like to say it like that 
btw he’s indian … operating from UK