Surely you must agree Tommy, that the majority of users on here selling and buying items, are from the US? I am not sure how I could possibly be limiting myself by offering my items for sale to the people who easily buy and sell the majority of the items on this site. Offering my items to, the world I guess, was somehow going to make all the difference.
Besides. I have bought several items from people who stated in their post that they would only ship within US. I just simply sent a PM and asked if they'd be willing to ship to me. The answer on several occasions (5dc, 70-200IS II, 16-35L..) was a yes. Which leads me to my next point. My price, which you mentioned.
I pick my prices carefully, Tommy. I research what that item has sold for in the past, on this site, and what condition it was in when it sold (Shutter actuations, scratches, Mark 1,2,3 etc). Then, I pick a fair price. The majority of the time, I am correct. If someone thinks its a little high, then all they have to do is ask. Much like I did when I purchased those items from folks who were set on selling their item within their home country.
Please, stop trying to blame my items not selling because of my price, or who I choose to sell to, and lets bring this back full circle to the OP's point. The forum does not sort properly. That is my opinion.