Every Marshadow card we price, most valuable first. Prices are what copies actually sold for, updated daily.
The same Pokemon is also printed as Marshadow & Machamp, priced separately because the game treats them as different cards.
What a Marshadow card is worth
The most valuable Marshadow on this list is Marshadow GX (Secret) from SM - Burning Shadows at $29.95£22.54€26.38, and the 20 priced copies across 13 sets are worth $104£79€92 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.
Marshadow is printed in Japanese as well: 13 cards across 10 sets, the most valuable of them Marshadow from Remix Bout at $6.86£5.16€6.04. 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 Marshadow sold for $1,206£907.69€1,062. reverse holo printings are priced separately from the standard card, because they do not trade at the same money. Rarities here include Illustration Rare, Rainbow Rare.
If you are trying to identify which Marshadow 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: SM - Burning Shadows, SM - Cosmic Eclipse, Mega Evolution.