You can purchase a Talking LabQuest 2 unit (LabQuest 2 and Voice Software) directly from Independence Science,, 1-866-862-9665 Toll Free. They sell many other products, including Talking Logger Pro, for blind and low-vision students.

Customers outside the US and Canada, please contact your local dealer or Vernier International.

See also:
How do I use a screen reader like JAWS with Logger Pro?