The one listing for 167.99 says it 'Authorized distributor.' in the bullet points. I don't know Amazon or your seller. But Arizer will only take returns from an "Authorized dealer." The other listed 'Lifetime Warranty.' That can't be right? So if it arrives DOA can you RMA? That is my concern as a person who bought his first EQ from an authorized dealer and RMA'ed it back to Canada for a repair. There wasn't a US A.D. at the time. There was an A.D. of Arizer that even did in house repairs, So it didn't always have to go to Canada. Anyone remember? Also Puffitup is a known FC member around here and A.D. of the Arizer.