Hi,
Unsure of what you want to achieve exactly. If you're looking to generate leads, I do this with your exact target audience through LinkedIn.
I charge $600 a month, usually all upfront, however, in this instance, I will charge $200 for set up and $400 on completion of first month.
Lead levels depend on varying factors, as an average, you'd be looking at about 20-30 a month. These would be high quality leads of people interested in your product/service.
I'm based in the UK but we would need to have a chat before starting, to make sure I understand your target audience.
Thanks,
Milo