I bought one at a gun show for $85.00.
Thompson center
100-500 USD
The value varies by condition and seller between $150 and $800.
100-400 or so
You can order direct from Thompson Center or Dixie Gun Works also Midway USA. All have on line stores. You will need to know the model and caliber.
Yes. I've heard of it.
50-450 usd
100-450 USD
the first projectile was a muzzle loader ball discovered in 1812 and it was a 68 caliber ball
100-400 USD
While these are very well made firearms, the value of the traditional sidelock rifles has decreased as in-line muzzle loaders have become more popular. These can be found in very good condition for about $250. I shoot a T-C Hawken in 50 cal, and it is an excellent rifle.
http://www.michigan.org/Things-to-Do/Outdoors/Hunting/Default.aspx