Please consult with your doctor before trying these traction devices. If there is some aspect of your health, such as high blood pressure, of which you or I are not aware, using these devices could be dangerous to your health.

LOWER BACK TRACTION DEVICES
Yukon Total Back System Inversion
Yukon-Total-Back-System on healthyyouhome.com. 
Retails for $450. This device versus others on the site offers the valuable opportunity of doing excellent strengthening exercises for lower abs, upper hamstrings, glutes, and lower back. Discuss proper use of this device for traction or exercise with me and your health care practitioner before use.

Back and Joint Pain Reliever by Hammacher Schlemmer
The Back and Joint Pain Reliever on hammacher.com.
Retails for $165. This device does not require the user to be inverted.
This may sometimes be found used at Amazon.com for slightly less as the Stamina Inline Back Stretch Bench
Discuss proper use of this device with me and your health care practitioner before use.

NECK TRACTION DEVICES
Cervical Neck Traction Device on Amazon.com.
The models by Instacure or AMC are adequate quality products. Price range: $15.-25.
Discuss proper use of this device with me and your health care practitioner before use.