They are level 1, and the RP behind the mission is that the MASSIVE city they live in is having a shortage. A RL fellow DM suggested 25 silver per pound, and I planned on reducing that by a silver for each hundred pounds turned in. Is that a good price?
More details for the city to prevent confusion. It is HUGE! Millions of people live here. And whats more, its a trade hub. So the shortage is effecting more then just that city. The Guano is being collected with intent to resell in alchemist shops.