Mobius Grid

US $20 per month for a 20,000-prim region on the hypergrid-enabled Mobius Grid.

Region can be configured as a two-by-two varregion, and hypergrid can be turned on and off.

Larger regions are also available.

There is a three-by-three varregion with up to 60,000 prims for $40 per month.

A four-by-four varregion with up to 120,000 prims is $75 per month.

Full details here.