I'm assuming that because most of the locks in Judo are banned from competition that most instructors don't even bother to teach them...? The school around the corner from my house is different in that $70/month gets you Judo every Tuesday and Thursday (5:30pm - 7:00pm) and one Jiu Jitsu class on Saturdays from 11:30am - 1:00pm. Maybe the Jiu Jitsu is for teaching alternate techniques or perhaps what they "cannot teach" in the Judo class? The dojo is owned by an Aikido Nidan (I've watched him teach) and the place is big, spacious, and clean. I'm going to watch a Judo class tonight just for fun.