The cost per lead is usually a hard question to answer. Reason for that is because every campaign is different and has many different variables such as:
So, as much as we would love to give you a good cost per lead number, it's almost impossible to do so.
Usually the best thing to do if a client is asking that question is explain to them all the above.
Also, recommend that the client gives you a couple of months, usually 1-2 as a "testing" period to optimize the campaign to get the lowest lead cost for them.
Our systems, platform, softwares and people running the campaigns are really perfected.
So we can definitely get them a really good cost per lead, it just takes a bit of time to get the campaigns dialed in.
This is a great article that shows some good industry average benchmarks: