Pulsedmedia provides the best seedboxes in terms of space and speed, it also has one of the lowest cost/GB, they provide you a 14 days seedbox trial period money back guarantee seedbox if you are not satisfied for any reason with their services then they will refund you.
There are various packages as below, click on any of the plans to visit.
With their amazing servers and service I think these are the best if you are planning to try out a seedbox.
For more information you can visit the pulsemedia Website here : http://pulsedmedia.com/
Or you can get the cheapest dedicated seedbox at seedstuff.ca @ 100 mbps dedi server seedbox for only 10 $
choose plan below