ADDONS

• Accessories

• After-market purchases

• Annexes

• Appendages

• Enhancing accessories

• Extensions

• Extra charges

• Extra units

• Extras

• Home improvements

• House enlargements

• Optional components

• Options

• Peripherals

• Riders

• Riders, e.g.

• Sales taxes, e.g.

• Scanners, PC cameras, etc.

• Seat warmers, CD player, et al.

• Supplements

• They're not standard