I need successful Social Media advert campaigns set up

We are a fitness clothing line, launched on 26.12.16, named 'GymJam'. We have launched various social media advert campaigns, a couple of which have proven to be OK. However we believe that with the right person, we can dramatically decrease our cost per purchase, as these seem quite high. We propose a percentage per sale paid to our social media adverts marketer. This percentage will increase and be subject to a performance basis. Please feel free to check us out, '@GymJam'. We have high hopes for the business and have been doing well, however we wish to take it up a notch and would be grateful to hear from those of you whom wish to get involved. I believe this could be rather prosperous for all involved and that there is a big future ahead for the business, globally.