Disc Doctor (see discdoc.com--note there is no "www") has gotten very good reviews. It isn't cheap, but a starter system would run well under $100, and will work without a cleaning machine. It's also supposed to work well even on very dirty records. It does require distilled water, and sounds like a lot of work, however.
inexpensive record cleaner
I have recently set up a rig for playing vinyl and inherited most of my dads old records. What is the best way to properly clean these for optimal sound after they have been in storage for 10+ years? Also would this work for cleaning any used records i bought. I do not want to spend more than $100, but feel that a proper cleaning system would greaty improve my sound. Thanks, Carl