It essentially depends on how much disk space you occupy and the traffic generated by the views of the content posted by you.
WimTV use is offered in 3 “packages”: basic, professional and business, all with a monthly duration (link). From the basic to the professional package, there is more disk space and more possibilities to transmit. Then there is a special “unlimited” package if you need to serve many views and upload many videos. This is a business package in which surplus consumption is finalised at the end of the month.
Packages can be bought monthly, quarterly, half-yearly and annually. For 3-6-12 months, discounts of 10%, 20% and 30% apply. Monthly packages can be purchased from your user profile, multi-month packages can be requested by sending an email to info@wimlabs.com.
Payment is in advance, except for the unlimited package for which the initial part (business package) is paid in advance and the excess at the end of the month.