There are no membership fees and no monthly charges. Upload as many images as you like, you pay only when you are happy with the results and want to download the final version.
$1/MP (million pixels) for the first 100 MP,
with a minimum charge of $10
$0.5/MP for 101 ~ 200 MP
$0.25/MP for 201 ~ 400 MP
$0.15/MP for 401~~ MP
Example: For 20,000 * 25,000 pixels = 500MP; The price would be: $100+$50+$50+$15 =$215
(There is a $10 minumum charge per image.)