Your list has a lot of good starter pins on it for sure. Not sure which Simpsons you are interested in the original Data East or the stern Simpsons pinball party? Your list is almost in a descending price order if you bumped Mustang up two. Jurassic Park down one and and Super Mario up one. Yoski has great advice! With patience any pinball machine can come along in good shape and cheap. If you do your own maintenance you can almost always at least break even when you resell it. I have done this many times over the past couple years. I often find myself upgrading pinball machines that I've grown bored with to ones that are new to me. Good luck with your search.