car price guides

[melvin cuda]

How come price guides anywhere I look on the internet do not match what the Cudas and Challengers sell for. Most pricing I just looked up for example for 70-74 Cudas shows the cars valued at roughly 19,000 tops, allbeit everytime I look on here Cudas that are done sell for oh, 25k-100k . I do not understand car prices, supply and demand, the whole value structure of a classic car///?
thanks Mel

[challngd73]

where exactly are you checking the prices?  I typically check NADA classincs, and the prices are MUCH higher than that.  they are pretty much par for what I have seen them go for. 

[4Cruizn]

The 70-71 cudas usually bring a higher dollar than the 72-74 models although I think the later is catching up.