Buy the mold and pour your own terrain - about 40 resins pours per mold and hundreds of plaster pours per mold.
Square and hex tile molds available.
Tempting - but then I have all these unpainted minis I'd have to paint too ;P
Still, for those that use terrain the price point becomes truly inexpensive if you decide to make dozens of pieces. Heck, there's even a license that allows you to commercially sell the pieces you make.
Terrain Crafter is part of Illusionist, the same fine folks that bring you the Tenkar's Tavern Crate, Mythoard and other monthly goodies.
The Minotaur for Old-School Essentials
*Requirements:* Minimum STR 9, Minimum CON 9
*Prime Requisite:* STR and CON
*Hit Dice:* 1d10
*Maximum Level:* 8
*Armor:* Leather, including shield...