Never heard of them. A friend of a friend has a US Mercury set (MIJ) he wants to sell for $100. It comes with a snare, bass and two mounted toms. The floor tom is a newer Percussion Plus. When he mentioned "US Murcury" I thought it was a newer cheapo company.
What little info I found on them on the net I've gathered its probably gonna be a cheapy set. But hey- I'm gonna ask you guys! What's up?