The Raiders have an office here in Las Vegas with a display case of SuperBowl rings which look pretty damn impressive if you are into jewery on your fingers or a small part of Superbowl history.
I believe that the NFL has a budget of $50,000 that can be spent on each ring, but each winning team can add any amount to that budget if they wish to do so.
I also believe (but I ain''t sure) that each individual ring is crafted for each individual team member .... and that less expensive Superbowl rings are 'awarded' to the employees working for that winning team that season.
I have heard that approximately 150 Superbowl rings are made each year a nd that GetBiggers can possibly purchased a 'used' Superbowl ring on the net or in one of the pestigious hock shops such as the hock shop here in Vegas.
The ring's value is based on whom it was initially awarded to.
Estimated Superbowl ring value ... My wild guess would be ...$50,000 to $250,000+ (US).