Sweet link-plant in your previous post. Guess you haven't been reading Google's webmaster guidelines about keyword-targeted anchor links in forum posts.Absolutly agree.
You should buy from a lead generating company and at a same time get your own marketing in place. This way few years down the road, you can have your own lead generation in place.
Cheaper in the short-term, yes. BUT little long-term value is created.From what i noticed, and i do hvac lead generation full time, cost wise, it is cheaper to buy leads.