Selling my used gear is one of my strong points ... over the last few years, I think I kinda mastered this art ... I work in a company that has 150+ office based employees and 1000+ rig based employees (offshore/onshore) ... because of my hobby, some of the management staff requests me to make images of our rigs and other equipment (some of which are used in our company brochures, presentations and news paper adverts etc ... to my good fortune the so called professional photographers our company hired here so far, have produced some very shabby images and the management prefers the ones I make). This led me to a few of the office staff asking me questions about camera gear selection ... which eventually got me into conducting weekend "workshops" on simple photography principles like f/stops, shutter speeds, ISO etc ... which led to building trust with several of my colleagues ... and when I was planning on upgrading my EOS 400D, one of the colleagues asked me if I was planning on selling any of my camera gear, so I made my first "in-house" sale, he was very happy with that deal and the reputation grew from there ... as on date I have 14 customers who have bought various things from me (i.e. 6 cameras, 18 lenses, 2 tripods, 1 MBP, 1 iPad, 2 iPhones, 1 Samsung Mega, 1 Samsung Tab, 1 Alienware Laptop etc) ... just today, I sold my EOS-M & Tamron 24-70 f/2.8 VC to one office colleague (he didn't have enough money so he only paid me $500 and will pay me the remaining at the end of the month), plus I've got another office employee lined up to buy my Canon G1 X within the next 2 weeks ... one of the things that works for me is that I accept credit cards ... I sell my used gear and tell them that they can pay me with their CC by purchasing something I want from B&H, Adorama or Digitalrev ... this has worked for me really well since 2008.