If anyone is interested I just made myself a couple of additional camera carts. Previously I made myself a steadi-Rubbermaid cart and could do an "improved" steadi version on request. I'm always working out of a van, a Sprinter or a box truck so the non collapsible nature of Rubbermaids was never an issue.
What originally got me going on these was the fact that they are light, affordable and readily available on the East Coast. I also really like the cupholder on the older carts. But they needed improvements for production work. The main feature of course is the fully welded subframe which facilitates the foot brake. I also use "no-flat" tires as I got tired of pumping up flats. The large tires roll over grass, gravel, and cobblestone streets with ease. I welded vertical supports to my older Rubbermaid camera carts out of necessity. When you start loading these up the upper tray does get wobbly.
All you West Coast guys have multiple vendors to choose from, but the shipping of carts to the East was always a deal breaker for me. I thought I'd try selling these carts for $795 (short deck) and $895 (long deck) and offer free curbside delivery to buyers in the metro New York City area.
One of these days I'll build a website for gear (www.klkproductions.net) but for now you can contact me direct:
may consider renting these too- $100/wk.