I was reading through the skills and noticed that the description of Trade(Merchant) says (core book, pg 108):
"Used to find, bargain and sell trade goods."
That sounds a lot like it would include the process of what is done when a character is trying to find an item. The Availability rules (pg 125) instruct you to make a successful Inquiry Test in order to find the item that you're looking for. I suspect that this is because Inquiry is a basic skill and a lot more common of a skill, hence more generally appropriate for the majority of characters.
Questions:
1. Are there any expanded rules for skill uses (similar to what was done in the Inquisitor's Handbook) for using Trade (Merchant) in place of doing an Inquiry test?
2. If not, as a GM would you be receptive to a player that wishes to use his Trade(Merchant) skill instead of Inquiry for the purpose of finding an item?