Free: Contests & Raffles.
To answer a couple of your question... YES the condition of BOTH limbs and strings and cables is important. Especially if buying used. Heres my Go to a pro shop and get fitted first and foremost along with figuring out a comfortable poundage. I have heard mixed reviews on cabelas service, but have no firsthand experience with their shop. Second - if your serious about buying used, do your best to enlist the service of a knowledgable friend or experienced person to take a look at the bow prior to your purchase. Limbs can weaken with time, strings and cable stretch, and servings wear. cam lean and tuning issues may be huge. All of that takes money to fix and could cut into what you think your saving. Third- As has been said, if your going to buy new shoot as many as you can in the same price range prior to purchase. I personally dont see a compelling reason to shoot a bunch of new models if your pretty set on buying used. You already are limiting your selection being a lefty, then to try to factor in a certain brand and model, ( and you may not have even shot that model instore, since they usually only carry bows that are last year models or newer. ) it can be done, but may be a daunting task. Theres a ton of info out there and some great shops as well, I bought my first bow on consignment from a pro shop and still have it today, its outdated but still a shooter. Good luck and Feel free to PM with questions.