WB :D
I built one of these,
http://www.ebay.com/itm/Bitx-Version...item20d6999e1f
It took a little bit more fiddling to get working than the usual kit, but it works well. I haven't cased mine up yet, it on the to-do list. A lot cheaper than the qrpkits version, but of course more work to do. It comes with a PSU/5W amplifier, which can do more with higher amp voltage and has its own regulated supplies so no mods required to do more power. You'd have to select a transformer, you probably have something suitable kicking around in a box somewhere. It would certainly end up bigger than the qrpkits version. It also has an LCD display with frequency locked huff'n'puff controller. There is some annoying work to do setting up the VFO to work as you want it, I used a 10 turn resistor and a load of varicaps to get the tuning range required.