Selling your Pokemon cards online will get you the best price, but it can be time consuming: taking pictures, writing descriptions, responding to customers, packing, shipping, returns its a lot of work
I can understand the impulse to use a fake $5 Underground Sea when the only other option available (thanks to the Reserved List) is a $2,500 playset of Underground Sea
To explain the grading system, a good rated Lugia could sell for around $50, but in 2020, this 2000 Lugia sold at auction for $129,000, boasting perfect condition
However, anything in Magic that cares about transforming things treats "Convert" as the same thing as "Transform"
Pros: Absolute best profit margins short of running an actual store Cons : Only useful if youre selling a small handful of high-demand cards PucaTrade This isnt selling per se, but if youre going to use the money you get from the sale to buy more cards, it may as well be the same