Linden Lab used to sell land in small 512 m² blocks (16 by 32 meters) through its First Land program, but that program has been discontinued. They still sell entire 16 acre (65,536 m²) regions. SL real estate is limited in terms of primitive count and parcel size for a contiguous parcel of land, the largest being 65,536 m² (a "sim"), which can contain up to 15,000 primitives. There is an "additional" 1,000 prims held in reserve for the attachments worn by avatars, such as clothing and accessories.
A private island sim costs 1,000 USD (formerly 1,675 USD) setup, plus 295 USD per month maintenance.
OpenSpace regions (sims) are "low prim" sims and allow 3,750 prims per region. The cost is US$250 with US$75 monthly maintenance fees (tier fees).
Mainland regions are auctioned off by Linden Lab, and usually sell for a few thousand US$. (There was a market high in 2006 of about US$4000.) Owners also incur a monthly maintenance fee. Linden Lab also auctions smaller parcels when they are abandoned by their owners.
Residents also buy and sell land to other Residents, often hoping to make a profit by selling the plots of land at a price higher than the original purchase cost. One approach is to develop the land by adding desirable buildings, businesses, or landscaping. A more speculative approach is to buy land in bulk, divide it into parcels, and sell or rent the parcels.
This free market can be affected by Acts of Linden For example, Linden Lab can decide to deploy a large number of new servers, thus creating unexpected supply of land, possibly causing land prices to decrease.
Another development is the landbot. A landbot is an automated mechanism for purchasing land that is for sale, based on specific criteria or sometimes unconditionally. Landbots are sometimes used by residents with large real-estate holdings to automate the purchase of available . Some abuses (or alleged abuses) have occurred, with landbots buying land so quickly that a resident who accidentally sets the price of a parcel to L$1 or fails to designate an authorized buyer loses the land to the landbot before he or she can correct the mistake
However, objects cannot purchase land automatically, due to limitations in the scripting language.