I went over all the material required and chatted with some suppliers to get a feel for price and volume. This includes the Elwire, inverter, connectors, 3D printing supplies, labor and all the other little things. To make a story short, even bulk buying from China, a kit would still be more expensive than I was hoping for (~200-300$). So, I did the next best thing and posted all this on Thingiverse such that those who want to can build their own.
You can find the link here:
For those who don't have 3D printers, you can always get it printed at Shapeways or other similar site although that may get expensive. If some people really don't want to build their own, I might consider making a few down the road but it wouldn't be cheap because of the labor involved.
Note: sorry for hijacking this thread. Bad etiquette on my part...