I would be happy to help you. I work in pre-sales and billing and manage the Sales Chat during the week. But to give you an idea on the pricing here is some information:
We offer two license types based on what your needs are: Professional and Developer
Professional license is for individuals creating one to many sites for domains they personally own and operate. Developer license is for individuals creating sites (one to many) for clients or domains they do not personally own. This license also allows for creating your own themes and having your own forum on the site(s).
Next we offer two different options for each license type: Framework only and Framework with Plus membership
Framework is exactly what it is. You receive just the Framework, one year of support through email and the forum and any minor upgrades to the product (2.4, 2.5, 2.6 up to 2.9). The price is a one time fee.
Framework with Plus membership includes continuous support beyond the one year through email, forum and our new Live Chat which is manned 24 hours a day Monday-Friday. You also receive minor and major upgrades on the product. This means not only 2.4, 2.5 up to 2.9 but when versions 3.0 or 4.0 become available you receive these for FREE! You also receive free product extensions in our Store in addition to one new Pagelines product created each month for FREE.
Since you are signing up for Plus membership (which is a monthly subscription) we discount the Framework for you. That is why the price is different.
I would love to talk to you more in Sales Chat (9am - 2pm ET) or through email at firstname.lastname@example.org when you get a chance or if you have any other questions.