If you've only got 200 to do, I'd strongly recommend BORROWING a cleaner (either vacuum or ultrasonic), paying the lender a few bucks for its use, and call it a day after you do the cleaning. Since these are inherited and not a collection you've assembled yourself, you'll probably find that you really like about 20 out of the 200 records, and any expense purchasing a record cleaner will have been wasted.