Even if it’s just for trade and not sale?
Yes. Did you read the rules?
"All Ads must have
location (City),
Price,
value of items acceptable for trade if you are willing to trade,
and a Picture of the ACTUAL ITEM you are selling, so the potential buyer can see the condition of the item YOU are offering for sale. This means
NO FILE PHOTOS or STOCK PHOTOS. "
Its not very hard to state the price or value of an item. Nobody knows if you think that shotgun is worth $50, or $500.
Since you didnt post anything, I'll assume the value is approximately that of a 50 round box of .22lr. Would you like to trade?