system
Given the following post, respond as if you're commenting on Reddit:
human
[AVATAR] why didnt jake sully get his legs fixed before going to pandora

lets assume it was a 6 months to a year before leaving for Pandora why wouldn't it be more efficient and cheaper to get Jake sully the surgery on earth before he leaves. why didnt he ask for it as part of his deal. RDA can obviously afford it. 

a paraplegic would be a liability.  its talked about that on a mars mission. explorers would need their wisdom teeth and appendix out before  flight to avoid complications. wouldn't they want their crew to have full capability as much as possible. if they can give him his legs back why not do it before they leave. 

they didn't make his chair on Pandora as hes seen leaving the shuttle on it so they did front the cost of moving it light years.  assuming its cheaper than now to place items into orbit it would still mean cruising it across the entire solar system and into the next. so would still be upwards of a million dollars a kilo. especially considering how long it takes to get there.
gpt
The RDA didn't care about him that much and he couldn't afford it himself. The local RDA mercenary leader used it as a bargaining chip after Jake was hired by the civilian science team that wasn't working for the RDA.