1 lbs = +/-454 gram
1 troy ounce = +/- 31 gram
Thus 1 lbs = 454/31 = +/- 15 troy ounce!
The ECS company, in a ridiculous calculation, only pays you "10x the price of 1 troy ounce of silver for each pound of silver", while 1 lbs or pound of silver is actually worth 15x times the price of 1 troy ounce of silver, as it is 15x times more silver based on the weight.
This means this company is making a 50% profit on the bought silver, and even has the guts to charge you $85 refining costs. Now the 50% profit may be a "normal" profit in the branch, but to hide it by some ridiculously difficult calculation, is just deceit.
By the way, current silver price = +/ $30,- per troy ounce (half a year ago still around $18,-), or almost $0.9 to $1 per gram, see graph for trend of the last year.