Brandi -
I'm not familiar with PSE bows, but is it an option to buy a new set of limbs at a lower draw for it? It is a shame that used bows don't hold their value - except for traditional bows (mostly). When I first started out in archery, I made the same mistake as you; buying a bow that was way to heavy for me. It was a beautiful Damon Howatt Hunter, with just beautiful wood in the riser. I hunted with it for a week, then hung it up on the wall, and ordered a custom take down (a Bighorn, company now defunct, by G. Fred Asbell. Selling it was the biggest mistake I EVER made; they are impossible to find now) with a more reasonable 45lb draw. The Howatt hanging on the wall was a 65lb draw. I did however manage to kill at doe at the amazing range of 6 yards the first morning of the season, but I considered it a lucky shot!)
Before I went to traditional bows, I had started out with a Bear Whitetail (remember that train wreck of a contraption?) and moved up to a Jennings Shooting Star. (another ill conceived sale I regret!) After I sold the Jennings, and the Bighorn, I was lucky enough to meet a very kind gentleman named Tom Parsons (who incidentally now is a bowyer who makes beautiful, and incredible shooting, recurves) who sold me a longbow made by Jerry Shulz, a protege of Howard Hill. I bought that one used for $400. I suffered a back injury and am now disabled, and have had to stop shooting, but I've been hanging onto it, for both sentimental and money reasons - I wouldn't sell it for less than $700 now, but no one seems to think it a reasonable price.
Sorry for rambling - my point is, yes, used bows don't hold their value, unless it's something very rare, and you may be able to lower the draw by switching out the limbs - which I'm not sure is possible with your bow.
Good luck though!