A list of what you collected from the sailors' guild members:
From the three in front of the house:
Scroll of Floating Disc (5th level)
Three potions of healing (1d8+1)
From the two behind (who I assume you search):
Two potions of healing (1d8+1 and 2d8+3)
A magical sponge (To be identified)
You have a total of 8 batons (clubs) and four daggers, and about 20 feet of rope. I will assume you didn't peel off their armor and boots.
Note that these clubs do have a small value as they are crafted, not just big tree branches.