Create a buyable entity such as a money printer or a drug lab, with its price, limit and buy command.
Shown in the F4 menu.
F4 menu category. Optional.
The scripted entity class, for example money_printer.
Typing /command buys it. Lowercase, no spaces.
The .mdl the entity uses in the world.
What it costs to buy.
How many one player may own at once.
TEAM variables that can buy this. Empty means every job.