Ok a few things here. I've shot a bunch of holga and pinhole over the years and this is probably one of the funnest.
It takes the dreamy diana photos that we all love, except instead of filling up the entire 35mm frame it uses about 2/3 of it and makes a negative that is square..so on the normal film setting you get about 45 shots or so on a 36 exposure film. Since i make prints manually its not a big deal, it might take a little manipulation on your part to make it look normal in a scan.
Tips:
Do not play rough with this camera, if you find the film not advancing when you twist the knob click the shutter, when starting a new roll sometimes its tricky to get the film to feed and advance properly. Listen for the 'click' when the new frame is in place, and do not attempt to force the knob. if you feel the film is a little too tight coming out of the spool, reduce the tension in the spool via the film rewind knob.
The metal prongs that hold the film in place will probably scratch the back of your film, you can solve this either sanding them with some fine grit paper or putting a small strip of cellophane tape on them.
The flash is more than adequate, so much so that i wouldn't recommend using at close distances unless you have low iso film loaded. However do not leave it connected to your camera and then throw it in the bag.
Also this camera has a cable release as well, which is just another bonus on an already great gadget.
100 bucks is a little pricey, but its pretty unique and the pictures it takes are pure win. Overall i am happy.