If you progress what you're thinking, give it a year and it will completely change your outlook in that you will love and respect the structured, corporate way of working more, whilst loathing and resenting the "casual/informal" approach that you currently think may be good. It won't be good. From your introduction, you're used to dealing with intelligent situations & people who are likely adhere to their side of the contract, are solvent and look after the rental/leased equipment. Welcome to dealing with the exact opposite. As others have already indicated, there's probably no real market to rent out "entry level" DJ equipment, when dave doubledecks can buy a secondhand pair of powered speakers, a laptop with 50,000 low bitrate MP3s and a few lights that flash coloured dots around the room for a few hundred quid from gumtree. So the next level up comprises those who will either trash your kit, fill up the decks with beer and leave cigarette burns on your mixer, or hire it with the outright intention of never returning it. Every one of these donkeys that phone or email you will be a "qualified sound engineer", whatever that means. Just accept it, it's a thing. Pioneer CDJs and DJMs are the most sought after items in these circles, as they can be converted into cash (weed) quickly, with no questions asked. We do hire out CDJs, DJMs and 1210s, but, and it's a big 'but' - only when also hired with a d&b audiotechnik sound system package, to corporate events and high end weddings where the technician arrives, sets up, stays with the kit to engineer/babysit and removes it at the end of the night. Never do we dry hire and never do we leave kit unattended. No exceptions, not for anybody. Which is why this only represents a very small part of our overall PA business.