are there any places I can see past cosmetic price for a reference?

[Smith_X]

I want to know the alternate card back of expansion card back price in the past. Could anyone tell me where I can find any wiki for that?

e.g. the alternate master mirror card back (dark sinister tree card back) -- how much is it?

 

[jed9653]

I want to know the alternate card back of expansion card back price in the past. Could anyone tell me where I can find any wiki for that?

e.g. the alternate master mirror card back (dark sinister tree card back) -- how much is it?

I haven't seen anything with prices for past cosmetics, just https://trendygwentleman.com/cosmetics/ for anything that has been available in the past.