I need a custom mod that allows users to trade and leave feedback for one another on the forum. My needs for it are pretty unique so the normal trade mod I found on this site will not work . How hard would it be for me to write a new one with little experience in that area? Is it possible for me to pay someone to write one for me? Thanks in advance for the help
http://custom.simplemachines.org/mods/index.php?mod=1083
Try that out. There's also a pro version that cost $$, but you're willing to pay anyways, so it doesn't look like that'd be a problem for you.
Unfortunately that or any other premade mod will not work for me, I need a custom one. I guess my real question is how hard would it be to make it myself? Or should I just pay someone to do it for me, who/how much will this cost?
Coding something like that would take a while, and quite a bit of effort. I don't see an issue with you trying it yourself though. There's no better way to learn in my opinion.
I would try asking in
http://www.simplemachines.org/community/index.php?board=50.0
A custom mod only for one forum usally costs more than a solution that can be reused on other forums and the price generally is based on the number of hours of work