growerbot is available as:
kit: $95
everything you need to build your own social gardening assistant, including basic moisture / light / temp sensors, a lasercut enclosure, display, and arduino-compatible microcontroller. Does not include wifi connectivity; you can add this yourself or manually upload your growth data. Note: this is an intermediate electronics project. Soldering and arduino programming experience recommended.

kit with wifi: $120
the kit, but with an electric imp included.

fully assembled: $195
assembled, with wifi. plug in and get gardening!

All orders include U.S. shipping and should arrive within 2 weeks.