US$20 for a 20,000-prim region with up to 50 simultaneous visitors, free upgrade to larger region sizes, on the magic-themed Spellscape grid. First six months are half off.
Additional prims are $10 per 10,000 prims, and additional visitors are $5 per 25 avatars.
Check out the online region cost calculator.
Free mainland parcels also available for both commercial and residential use.
Grid has its own currency, the Vivox voice system, free uploads, and variable-sized regions.
Grid is hypergrid-enabled, with filtering in place to protect content creators.