Amazed to see at 2:08, that someone sold 50K at 0.001 - $50.00....

Amazed to see at 2:08, that someone sold 50K at 0.001 - $50.00. Huh!! That would hardly cover the brokerage.
I am actually posting to get some insight into the following - I have read in countless fora that the recent SPs for silver miners are subdued because of the production costs squeezing margins. For many years, up to a decade ago, the price of silver hovered around $5/oz and I presume miners were quite happy to produce for that price. Even after a recent substantial price decline, silver is still at $20. Can it really be said that production costs have gone up over fourfold in the past 10 years? I can't see it, particularly with interest rates at historic lows.
I have held this dog of a stock for several years - first tranche bought at $0.11 - ouch!