Well, first off, while gold cards hold more value than most normal cards, there is still a lot of different context that needs to be added before placing a price on the card
First was this: These cards use the +1/+1 counter as a means to permanently grow something else (and to be fair only Weaponsmith did this out right, Transmogrant kind of hinted at it without directly naming the +1/+1 counterthis would later be fixed in Oracle)
(When this Digimon attacks and deletes an opponent's Digimon and survives the battle, it performs any security checks it normally would.) Card Q&A Q3196 Mar
The Engineering Benefit: This coating seals the ink, preventing oxidation and allowing for a higher "ink density." This makes blacks deeper and colors more vibrant
Are you excited for the Extra Monster Zone
A person who obtains their cards by guile is usually more formidable than a person who simply buys them