Question   I want a custom design. What size is $50+ one? What size is full page? Where can I view examples?

You can view descriptions and samples of the different types of capture page designs we offer here
https://webmarketingtool.com/prices.php

Note: That the difference in the starting price of $50++ and $100++ is due to the type of page, not the page size.
The starting price would be for a page that fills your computer screen (you wouldn't have to scroll down).
The price goes up as the page becomes longer.