Lead generation services are arrangement for a specific period. Eventually the same leads are sent to atleast 6 people as they claim, which is common in this industry. So your chances of winning the deal is just 1/60. Yeah, its not 1/6th. You need to do the math correctly as its not mere probability, its marketing war. Hence it is exponential. End of the day, lead generation business service as a channel for marketing has to be re thought. Its not bad for those commodities worth Rs.500/- to Rs.2000/-.
Marketing people out there, should think 100 times before using it as a strategy.
Beware, there are atleast 17% of prank calls, like children & teenagers trying out on how the stuff really works. They just laugh and disconnect or will laughingly ask the world for Rs.100/-. There is no account for such prank leads from the service provider and you will have to account it under pilferage only. The % varies for nature of business. In some cases, it is practically 38%. End of the day, if you are satisfied with something is better than nothing, have a second grade product or service, with the way to escape from the client doing shoddy jobs, then its worth a try.