Yes, all the connectors on the amp are gold plated.
$5.00
They are made of plated gold.
One sold on eBay for $250.
They are objects (For example a gold plated lighter) where a limited amount have been produced/made therefore they are collectors items
100-600 USD
50-400 usd
No. Plated is not the same thickness as plated.
Plated
18K Gold Plated.
Yes silver plated cables are actually recommended more over the gold plated ones. A lot of people say that the gold plated ones are a waste of money since you can get the same result or better from the silver plated.
Both connectors are gold plated
None are plated by the US Mint, some may have been plated as novelty coins.