Double Colorless Energy #124 from Base Set 2 is a uncommon card that currently sells for about $2.36 ungraded, with graded copies ranging from $5.40 at grade 7 to $21.00 at grade 10. A grade 10 copy sells for around $21.00, about 8.9× the $2.36 raw price, so high-grade copies are worth grading.