Greyhound 12" Promo Vinyl by Swedish House Mafia typically asks about $350 on Music Merch Marketplace (M³), based on live listings from eBay, Discogs, and official stores. That is 921% above the typical vinyl on M³ at $34. Condition, size, and signatures can move a single copy's value.
Music Merch Marketplace (M³) doesn't have enough live listings over time yet to say whether Greyhound 12" Promo Vinyl is going up or down in price.