Genesis Global Journey
$8 per month for a region with unlimited prims on the Genesis Global Journey grid, first week free.
Variables-sized regions also available, each with unlimited prims and unlimited concurrent avatars.
A four-region var is $18 per month, a 16-region var is $90 per month, and a 25-region var is $160 per month.
There are no setup fees and the regions are started up immediately after purchase. The grid is hypergrid-enabled.