Using played/damaged cards is perfectly acceptable in a lot of groups, especially for rarer cards that are now twenty years old and exceedingly difficult to find in near mint condition
Against another blue deck, it often costs just 1 mana to counter a key spell, so its perfect in Izzet Murktide or control lists that try to tempo out their opponent
image7051192 142 KB image7061192 127 KB PSA 9 - Mint A PSA Mint 9 is a superb condition card that exhibits only one of the following minor flaws: a very slight wax stain on reverse, a minor printing imperfection or slightly off-white borders
On the supply side are scalpers, who buy products to resell them immediately for a quick profit, and speculators, who hold sealed products for longer periods, betting their value will appreciate
It should not replace official spoiler sources, but it can support pricing and buying-related parts of the blog