http://www.oxyhealth.com/Index.htm

happened to see an add on CL- used ones for 5k
http://portland.craigslist.org/wsc/sys/314378646.html

[Two slightly used portable Solace Hyperbaric Chambers. $5000.00 each.Used maybe ten times. Burgandy color fabric. Made in 2001. Check out web for more details on use, wound healing etc. Sells for $10,5000 new. Exellent size for home or office. THE ULTIMATE OXYGEN TREATMENT provides a safe, highly effective method for increasing the oxygen level and delivery to all body systems. The Solaace mild chamber enables the body to utilize oxygen better, function more efficiently, promote healing and improve health and fitness. The affects from this mild hyperbaric therapy are cumulative, achieving greater, longer-lasting benefits with each treatment. Uses purified ambient air. No enriched oxygen is added. The rounded construction accommodates most people.
Weighs approx 18 lbs. Has carrying case for Chamber Body. Around 93 inches long, 32 inches wide. Inflated diameter about 22 inches/ Inflated Circumference, 71 inches. ]

just thought I'd post it in case any are interested in looking for something like that

you can change the CL search to your own area or possible ebay might have personal HBOT too.