The .BIZ (for Business) is the 5th largest general extension (gTLD), and the 11th overall. The registry is letting us (for the first time) sell these domains at half-price, or €6 (excl. tax) instead of €12 (excl. tax) until the 31st of may.
You can see the complete .BIZ price list at:
The .BIZ information page is at: