More info needed! I have to assume it is more than a turntable for the question to be asked...but you know about assumptions. Fringe?

$100 is REALLLLLY low-balling for speakers unless you go used and even at that. If the "record player" has speaker jacks like these...
it has an amplifier. The speakers will be hooked up to these. I am sure the OP knows this. These are "line out" connections meaning the signal is already amplified. It is helpful to know what the amp output is to better match the speakers. No need to buy speakers you cannot drive with the record player. So here you would shop for unpowered speakers.
Check these out...
Amazon.com: Sony SS-B1000 5-1/4-Inch Bookshelf Speakers (Pair): Electronics
Amazon has some really inexpensive Sony speakers that are in your starting budget.
If the OP cares to provide more info we can really make some knowledgeable recommendations.