I'm asking for a friend who wants to sell her 2000 Rocky Mtn. Vertex (I'm more familiar with Road flavored bikes) and wants to price it "realistically". It's extremely clean and low mileage, has an upgraded Bomber front fork and otherwise looks to be stock with primarily RaceFace components and some SRAM and Shimo stuff, too. She says she paid $2500 new, it's been tuned up...what does the market say it's worth today? TIA.