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When it comes to collecting sneakers, finding the right fit is not enough.

Over 1,500 sneakerheads made their way to a church basement in lower Manhattan recently, hoping to either sell, trade or buy pricy collectible sneakers at Sneaker Con, a quarterly sneaker convention. You won’t find any old, battered tennis shoes here—the sneakers at this convention were some of the most desirable, hard to find models on the market, costing as high as $3,000. Most were made by just two brands—either Nike or Adidas.

So what makes a sneaker valuable? A rare pair released in a limited quantity boosts value. Size matters , too: those sized Men's 10 and up sell better, because they’ll fit more fans. Bright sneakers (especially red) rule with collectors. Also, sneakers attached to famous names (think Michael Jordan or Lebron James) are always in demand.

Most of the sneaker started out selling at a retail price of $100 to $200, and have increased in value since. Click ahead to check out some investment-worthy kicks.

By Joseph Pisani
Posted Nov. 8, 2010

Photo credit: Joseph Pisani/CNBC.com