I've had a personal rickshaw for about 6 years. Fun! I haul friends and family around. Good times.
The Chinese one I started with is junky, but the Colorado-built Main Street I have bought since is far more capable. At $3400 new, they also cost about 10x what the Chinese ones run. Mine was bought used, and I have about $1000 in it as it sits today (details here: http://www.rickshawseason.com/about/main-street-pedicab/ )
If you've thought about getting a rickshaw for personal use, without knowing any details I'd say to go for it.