You can get a better idea of which of the two years this model was made at Bicyclebluebook where they list components as well as a guide for average price. 2001 https://www.bicyclebluebook.com/value-guide/product/35648/ 2002 https://www.bicyclebluebook.com/value-guide/product/37374/
It was either made in 2001 or 2002 and since there were different rims and different brands of rear shock used for each year that should allow you to decide which. MSRP was either $1,750 for the 2001 or $1,500 for 2002. Lots of people look with a bunch of skepticism at the suggested prices they come up with, especially these days with new bikes being so hard to find. A 20 year old MTB can be a great bike if properly cared for and stored over the years. I own two of them. It’s a good idea to inspect the tires for age related deterioration and replace the brake pads if they are hardened with age. New pads stop a lot better than brittle ones. The fastest way to make this bike way too expensive is to take it to a bike shop. You can find videos on how to maintain bikes yourself with very few specialized tools. Don’t put any money into it if you will resell it, just clean and polish it if needed.
If you are 6’ 3” tall the likelihood of this bike fitting you is not great. Using a really long seatpost is a bad idea to make if fit as the frame geometry will be off. I’m at the other end of the height scale for humans and bought a couple of bikes at police auctions where you could look at them from a distance but not up close. It was a real crap shoot and most times did not work out. The bikes were great for the price but weren’t a good fit for my height.
If you want other peoples opinions on how much it is worth, check out this site
Classic and Vintage Bicycles: Whats it Worth? Appraisals. Classic and Vintage Bicycles: Whats it Worth? Appraisals. - Bike Forums It’s free to join and you can’t post a picture until you have 10 posts but there are pictures at the bicyclebluebook website you can have people look at.