Every Shellos card we price, most valuable first. Prices are what copies actually sold for, updated daily.
What a Shellos card is worth
The most valuable Shellos on this list is Shellos from XY - Steam Siege at $0.49£0.37€0.43, and the 4 priced copies across 4 sets are worth $1£1€1 together. Most of that sits in a handful of printings: the older the set and the scarcer the print run, the wider the gap to the rest.
Shellos is printed in Japanese as well: 9 cards across 7 sets, the most valuable of them Shellos from Bonds to the End of Time at $20£15.05€17.61. Switch the list above to Japanese to read those, or to Both to rank the two catalogues against each other.
The highest PSA 10 on record for Shellos sold for $39.52£29.74€34.80. reverse holo printings are priced separately from the standard card, because they do not trade at the same money.
If you are trying to identify which Shellos you have, the set name is printed on the card and the collector number sits in the bottom corner. Open the card here and the page carries every printing of it, the graded prices, and whether grading the copy is worth the fee. Sets to start with: XY - Steam Siege, SM - Crimson Invasion, Lost Origin.