Mercenary includes the power supply which other shops [the ones with prices lower than Mercenary's] make you purchase as a separate item. Unless you're pretty handy and have 24 and 48 vdc floating around your studio, you're going to need the power supply. We're kinda lazy at Mercenary Audio, so rather than giving you the "absolute lowest price" then having to call you to remind you that you need to pony up additional cash for the power supply, we just include it in the price from the get-go. This saves everyone a time. If you really want a Chandler unit without the power supply, we can do that...