depenRAB on the situation and the material provided in the compilation.
if i'm already familiar with the artist and its strictly a 'greatest hits' featuring absolutely nothing i don't already have on album i 'might' think about it if it happens to be cheap and a great mix of an artist's catalog.
compilations that feature a mix of a few hits and unreleased / live / remixed material will definitely pique my interest and get considered the same way as any new album does against my wallet.
if i'm already familiar with the artist and its strictly a 'greatest hits' featuring absolutely nothing i don't already have on album i 'might' think about it if it happens to be cheap and a great mix of an artist's catalog.
compilations that feature a mix of a few hits and unreleased / live / remixed material will definitely pique my interest and get considered the same way as any new album does against my wallet.