Most Swiss watches are almost identical other than the name. The most expensive parts are the movement and the sapphire crystal. Most use the ETA 2892.A2 movement ($100) or the Valjoux 7750 ($200). Most have a Chinese made sapphire crystal ($150). The remaining $3000 is what you pay for the name. Rolex and Tag use their own movements in most, but not all their watches, but the difference is negligible.