I don't understand this ,why should you make a presell page for this kind of offers.If they click the banner don't they want to just sign up?It's not like they need to be convinced to pay for something they just got to enter thei're emails and complete some blank spaces ...so please tell me that I'm wrong because I am confused by this!
I think it depends on your traffic. Are the visitors familiar with your offer already or are they just seeing it for the first time? I have banners on my blog and I just send them to a capture page immediately. It works fine like that, but my visitors already know a bit about what they're going to see when they opt in, so the conversion rate is good. About 25 to 30%. It also depends on how much information you reveal on your banner especially if they're set up for cold traffic meaning those visitors don't know you or your offer in which case I would recommend a little bit more info on the banner Hope this helps
Presell page or landing page is for the visitors who want more information because you cannot all the details about what you are selling on a banner. A visitor will click on the banner to know more about the offer.
I think presell pages do a great job. You need them to weed out tire kickers who might only be interested in grabbing your freebie. I presell and use double optins. Builds responsive lists.
Personally, i don't think that Using a presell for lead generation is a good idea, because it's the job of the LP to do it... and because getting an email is a "cheap action", presell, will create friction.... If You have a good landing page, it's all good