I'm wondering about this bow that I'm looking at (first bow, new hunter).

He's posted the sticker specs in the ad and it lists "wt: 35-50#" Does this mean the limbs are only good for 50lbs? Everything I've read about this bow says max wt is 70. Am I missing something?

see the ad here:
http://fortmyers.craigslist.org/lee/spo/2198388235.html

Much thanks from a new guy