Why don't we trade more?

[t206hound]

After working out a trade with a board member (quite easily I might add), I began to wonder why we don't trade more. Granted, my niche is SGC 40 T206s common backs which are plentiful for sure, and there's a vast amount of sales data that can help out. Yet there has been fairly little trading that I'm aware of. I understand it's tough with items that have lower populations or are superior grades or issues that are exceedingly rare, but with the lower grade T206 community, what gives?

So, I can think of a few reasons:

• I don't have any inventory to trade
• No one has anything I need
• I have to make sure I get the better end of the deal
• The other guy wants to get the better end of the deal
• Shipping cards for trade is cost prohibitive

Anything else? I'm definitely curious...