Hi, I've got a question about a '98 Kona Explosif Pro for sale. The run down: Nice, older, vintage frame...21 speeds... project two fork... XT rear derailleur... LX front... Shimano XT shifters/ STX brake levers combo... Velocity stem... wheels are Mavic in back and Specialized in front... Shimano crank and peddles... new cloud-9 saddle. Very few scratches for an older bike. I like the look and feel. It's the right size. But I'm not sure it's worth $400? How much should I counter offer?