17. Temple of Brigh:

[GM Marvel]

E.S.S.A.C.U.S-10 appreciatively takes 2 silver pieces from Cin and combines them with his 5 remaining silver pieces, and hands 7sp to the storekeep, and says, "Can I please get 1 water resistant bag, and 2 air bladders?! Thank you!"

Me too. I need the same. 
After a short break she also adds ... and a bandolier, a signal whistle, 100ft string, 10 pieces of chalks, a belt pouch and one sack. 

Bag, waterproof, 5sp
2x Air bladders, 2sp
Bandolier, 5sp
Signal whistle, 8sp
2x Strings, 2cp
10x Chalks, 1sp
Pouch, belt, 1gp
Sack, 1sp

sum: 3gp 2sp 2cp

Do you have masterwork mechanical tools? (Tools, Artisan’s, 55gp)

"Sure do!"