njaguar gave said it was ok, we can do it.
The first thing i have to say is, using the item store you wont have any problem, but if you want to trade item for item, ok.
What are mediators for?
If you want to trade ladder for non ladder (or the other way) and you want a secure trade, you can request a mediator for this type of trades. They will take you items, they will take the other guy items and will give them to the other one.
Of course not everyone will be a mediator, just the most respected people.
So this post is so that you can vote what people you think should be mediators.
benass will be mediator
madhopz and kenneth too (although mad doesnt get online almost never and kenneth doesnt atm, but he will cuz his pc is broken)
CyBeR_SaDa imo could be too and neoptolemos also is an option.
Now say some people you think will do the job properly.