Its not my first choice for straight-up selling cards, since Cardspheres economy usually revolves around buying and selling cards at lower than market price (you can trade people cards for 50% of their value, but you also receive cards at a discounted rate, for example)
View as Gallery View as List Performapal Odd-Eyes Unicorn X LIGHT Level 1 [ BeastPendulumEffect ] ATK 100 DEF 600 P Scale 8 Once, while this card is in your Pendulum Zone, when your "Odd-Eyes" monster declares an attack: You can target 1 other "Performapal" monster you control
Different stores have different techniques, but it generally comes to down to something like Mint/Near Mint (M/NM) being the best followed by Slightly Played (SP), and Played (PL), Heavily Played (HP), and finally Poor
Is your card graded higher
and Bust, a sorcery for five generic and one red mana which destroys all lands in play