I've had several arguments with grognerds over the amount of treasure in "the old days", with them whining about how much magical loot and such there is in D20 adventures. This is a quote from T1-4 The Temple of Elemental Evil
Note, however, that not all of the treasure is cash. A typical assortment of potions, scrolls, and other magical treasures are present. Furthermore, many common but finely crafted accessories—serving sets, plates and cups, tapestries, and the like— are quite valuable, though not quite as immediately negotiable. And for the exceptionally industrious, even normal armor and weapons abound to such a degree that, assuming half book value as the resale price, nearly 10,000 gp worth of such items can be taken from the Temple's inhabitants!
That's JUST the half-price mundane junk. And it is actually low!
There are 5 men-at-arms you can free and recruit on the first level of the temple, and a sixth you can pick up on the second. There is enough magic arms and armor to give all of them full magical equipment without reducing the gear of the PCs.
For the 0 level hirelings.
There is so much loot, you eventually need to find this in the dungeon:
LEOMUND'S LABILE LOCKER
GP Sale Value: 25,000 XP Value: 5,000
This copper-bound box is two feet wide and tall, and three feet long. Invisible runes are scribed upon its front; these reveal four command words. The first shrinks the box to a twelfth of normal size, with all contents likewise becoming minute. The weight of the shrunken chest, empty or filled, is 30 pounds. The second word causes the chest (if of normal size) to function as one upon which a Leomund's secret chest spell has been placed (but with no smaller replica necessary!). The third word causes the box to return to full size or normal place, as applicable. The fourth word causes growth to quadruple dimensions, with sides, top, and bottom of one foot thickness, huge copper bands, and a weight of 1,200 pounds.
That's right, a portable hole is too gauche for you! It is only 2/3rds the capacity, but you get to carry your surplus junk in a magical steamer trunk!
So yeah, loot was pretty superfluous back in the day.