“In Japan, a promotional Cosmos Holofoil version was awarded as a prize for those who participated and won battles at 2008 Spring Battle Roads between March and April of that year.”
Are there any figures/estimates for the amount of these that were given out?
I have seen this card for sale literally once, I would imagine that it is fairly low, but not like insanely low being as you just had to participate and win in a match during a one month period, possibly look for cards from previous battle roads that were handed out under the same conditions and see if any of them are quantified?