Where to buy cheap mountain bikes like 3-4 years old?

Im trying to find a place to buy discounted mountain bikes not in bulk but possibly 100 or more in a period of time. Maybe like a place that mongoose sells there bikes to after they dont sell like the 2000-2003 mountain bikes. i looked online but could only find like 300$ bikes im looking for 100$ bikes from 3 - 9... show more Im trying to find a place to buy discounted mountain bikes not in bulk but possibly 100 or more in a period of time. Maybe like a place that mongoose sells there bikes to after they dont sell like the 2000-2003 mountain bikes. i looked online but could only find like 300$ bikes im looking for 100$ bikes from 3 - 9 years ago that could possibly be like 50$ now any help is greatly appreciated thank you
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