Because I wanted it to have some ability to make area attacks, I was considering arming with flasks of alchemist's fire (Player's Handbook 128) (20 gp; 1 lb.) a fire giant (Monster Manual 121–2). However, it struck me as odd that a fire giant would use the same flask of alchemist's fire that a puny dwarf would use. By the same token, pity the Tiny grig (235) that has a light load of just 8 lbs. that must laboriously haul to the battlefield that same 1-lb. flask.
Are splash weapons like other weapons that scale in price, weight, and damage according to their size? And, if so, what effect does this scaling have on such weapons' splash radii?