Average price of a good condition TRX450R is about $3000.00 for a good condition 2006 or newer.
2004 and 2005 TRX450's you can find all day long for $1800.00 to 2500.00 But the Cranks are known to go on the 04 and 05's.
I would say look for one that has been Garage Kept and mostly stock. Believe it or not it's really common that a lot of people own these bikes and have barley ever ridden it since the bought it brand new and then they sell them because they don't ride it enough and most of the time they sit in their garage or shed where they are not hit by elements and look brand new still. I see it a lot where I live any how.
Check craigslist, check Facebook Market Place, eBay's local ad's etc.
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