upcyclist
Well-known member
This is the most up-to-date info I could quickly find (all sites I looked at require a subscription or at least registration for current pricing):
http://minerals.usgs.gov/minerals/pubs/commodity/selenium/
USGS, January 2016The supply of selenium is directly affected by the supply of the materials from which it is a byproduct—copper and to a lesser extent nickel. In the first 3 months of 2015, the price of selenium remained relatively stagnant, ranging from $22.00 per pound to $25.00 per pound. During the second and third quarters of the year, the price of selenium decreased to $8.00 per pound, a 90% decrease from its alltime high value of $80.00 per pound in 2011. The average price of selenium has decreased by a factor of 3 over the past 5 years.
http://minerals.usgs.gov/minerals/pubs/commodity/selenium/