However, the best part about this, and the most powerful route that entrepreneurs take to scale their businesses, is that if you know that sending 100 people to your site costs you $200, for example, but you get two people to convert at $300 each, then you have a $600 return on $200 invested (300 percent). When you know that, that's when the entire game changes and you can infinitely scale your offers.
In marketing automation, Ryan Deiss, co-founder of Digital Marketer, often describes the sales funnel as a multi-step, multi-modality process that moves prospective browsers into buyers. It's multi-stepped because lots must occur between the time that a prospect is aware enough to enter your funnel, to the time when they take action and successfully complete a purchase. 
But let’s say that you want at least 100 people to purchase from your sales funnel. You can work backwards to see how many people you need at each point along the funnel. If you want 100 sales, you would need 250 people to end up on your landing page (100 divided by 0.40). In order to get 250 people on your landing, your social media ad needs to target 1,250 consumers (250 divided by 0.20).

This is a great addition which Leadpages and ClickFunnels both offer to all their accounts. It makes lead magnets super easy to use and works a charm when you are using lots of them at once. The only issue I have with these is that you can’t use this with a double opt in. So you need to make sure that if you’re using this on one main list, that it’s a single opt in process.
Your sales funnel is healthy if you have enough prospects going through it. If you’re moving enough prospects through the funnel with the experiences and interactions you create and if you are able to profitably convert enough prospects into paying customers, your sales funnel is healthy. See our article on Sales Metrics – 17 Reports That Improve Your Sales Pipeline Performance to help measure your sales funnel health.

For example, let’s say your goal is $1,000,000 in annual revenue. If your Lifetime Customer ANNUAL value is $1,000 per year, then you only need to do $1,000 in sales every year to 1,000 customers. If you can keep those 1,000 customers around for 3 to 5 years, then your only job every year is to keep those 1,000 spots filled with nurtured prospects.
If you’re using an email service like Mailchimp, then you might be stumped on how to send content upgrades without adding subscribers to a gazillion lists and thereby paying for your subscribers multiple times. LeadPages makes this a very simple fix. To do so, you just need to create a new “LeadPage” or “LeadBox” in LeadPages and then upload your freebie, which will automatically be emailed to your new subscriber after they opt-in. It’s an excellent solution if you want to grow your list with content upgrades, but don’t know how to figure it out tech-wise.
There are two options: pro pricing and free signup. Signing up is as simple as possible. You just need to create a username and password. Once you get in and start using their tools, you’ll have to upgrade. The free account limits the number of forms you can use. When you hit that limit, you’re requested to upgrade. Otherwise your account won’t work.

Clickfunnels: Review, Demo, Pricing and Features: