Consider that a single point in a mastery is usually about 30 to 40 gold worth of immediate benefit, with double that for per level gains.
The bisquit is about 45g worth of health and mana, relative to potions so its cost effective.
Wealth gives 25g but allows you to pick starts not otherwise possible (i.e. machette and crystal pouch)
This means an ADC with utility (unlikely I know), could start with a Dorans Blade, 1 health pot, and 1 semi-pot.
A toplaner with utility could do the same, and even have a 1 minute ward to drop after laning starts to prevent early ganks.
Im sure there are better uses, but those are some examples.