a set $5 doesn't sound that bad, assuming it stay thay way.
if this does go through, bandwidth consumption may sky rocket, possible destroying of the current entertainment buying (why send ~$50 for 50 songs, when you can just thousands on bit torrent for free? you pay the piracy tax either way, why not make use of it?), and if the MAFIAA start sinking more, it is a safe bet that the tax will go up.