If you are getting it for someone with mobility issues and have a doctor's order, you may be able to get insurance to pay for the lift portion. Depends on the condition and the health insurance. Also, if there are mobility issues, make sure that there is a battery back up so that the person can get out of it during a power outage.
If it is for a person that may be incontinent, you would want to consider what type of fabric. Like MIGrandma, some furntire stores have them as do medical supply houses.