The problem is knowing what the item is worth half the time. Especially those inexperienced with trading (I'm still kinda inexperienced so I know this to be true) its hard to know item's true value. When they see the true price a lot of the time they think its absurd because they don't know it's real value and how hard/easy it was to get. I tried to sell a sayrn prime set 5 days after it came out for 200p. I got many replies giving offers for around 80p-100p saying I'm overpricing it and one telling me to give it to him for 10p because I probably have like 30 sets so how can it be worth that much. It was my 1st and only set. I decided to start trading after having played for months and stopped a month later (a week ago) because stuff like this really turned me off.