From: Fionacat
Firstly when buying a previously owned fursuit you have to figure out what it was used for which falls into two broad catogeries, public hire or personal use.

Personal use is (really) no different then buying a brand new suit, except it should be cheaper then a brand new suit and may not fit so well.

Public hire means that it's been owned by a costume hire company and that's where problems start to creep in, if the suit has been available for public use it may be damaged, in a poor state of repair and require cleaning. It will however be a mere 10% the price of a fursuit (so rather than $500 it will be a mere $50, seriously.) if this extreme reduction in price is to your liking remeber that you will be buying a “high maintenance” suit, it will require frequent and sometimes costly repairs and there is no guarantee it will come anywhere near fitting.

These are great places to go if you're looking for full fursuits or just plain fursuit parts, like heads, paws, etc.

Ebay (http://www.ebay.com/)

Furbid (http://www.furbid.ws/)

FurBuy (http://www.furbuy.com/)

FurEAuction (http://www.fureauction.com/)

FurSale.net (http://www.fursale.net/)

Fursuit.co.uk Auctions (http://www.fursuit.co.uk/)

LiveDeal (http://www.livedeal.com/)

SellAtOnce (http://www.sellatonce.com/)