I have used PureLander to create a few landing pages now and it's a SUPER easy tool to create quick landing pages. They have a bunch of great templates that you can easily manipulate to create your own custom landing page for any affiliate offer.
You have to host the landing pages yourself, but PureLander makes it easy to download them so all you have to do is upload the files to your host.
If you want an easy way to make custom landing pages for your affiliate campaigns, give PureLander a try! You can't beat the price either :)