The good thing about bows in the $100-$200 range, used, is that they pretty much hold that value indefinately. You could pick up & sell a heck of a lot of bows in that price range & never lose a penny.
Onr thing to look into, possibly, is the older Bear bows. The mid-'70s era Grizzlys, Kodiaks, Super Kodiaks & Kodiak Hunters are all within your budget & are definately better quality bows than the Samick. The Big Auction Site has literally hundreds of Bear bows go through every month. That'd be my personal starting place.
Your number one choice wuld be to get to a few local shoots & try a few bows out. You'd be amazed how many folks'll let you take their bows out to shoot. One real advantage of being new to this, is that you have no pre-conceived ideas about grip shape, bow length, string material etc... & you'll struggle to find many, if any, real difference in the way a lot of bows will shoot. No disrespect intended, but only through experience can you really decide what feels 'right' to you. To start with, 99% of bows will feel the same, whether they cost $100 or $1000