Owning a Second Life sim:
Startup cost (Purchase price): US$1,500-5,500
Monthly cost/tier: US$195-295
First year costs*: US$3840-9040
*not including cost of a premium membership.
Owning an OpenlifeGrid sim:
Startup cost: US$0 (yes -Zero)
Monthly cost: US$75
First year costs: US$900
Could this drive LL's rates down/push them to open sourcing the server side code?