Has anyone bought a set of these and what did you pay for them? They list for $17.96 each but most on-line shops have them for around $12.00. Is that really each, per set of 2, or per set of 8? That's nearly $100.00 per set of 8 if that is priced each. Are they gold-plated super lightweight titanium or is the price per set of 8? or priced per pair which is still high at nearly $50.00 per head?