Tyrus,
There are two differenr types of what are commonly called "Pachinko" machines. One type plays and looks more like a slot machine with three bottons on the front where you can stop the wheels when you want. This type can go anywhere from $200 to $800. The other of "Pachinko" machine is the type that plays like the traditional Japanese game and has multiple steels balls similar to the old non-electronic pin ball machines. I believe you would get much more fun out of the former machine as they can be modified to take quarters and have a "one arm bandit" added.

From the looks of your link, you are considering the latter, $200 might be a little high.