This one got me in trouble!!!
This is a copy of the add I found on eBay it comes from a seller called Chamcamera. I got interested in this lens and bought one from him. I can highly recommend this seller I found him very helpful and communication was excellent. If you buy from him you can do so with confidence.

You are bidding on Excellent Canon EOS EF 200mm F1.8 L ULTRASONIC USM Lens. The world's Fastest 200mm telephoto lens. A High speed Telephoto lens boasting the world's largest maximum aperture in its class. Use of three UD glass elements suppresses the axial chromatic aberration (secondary spectrum) for sharp images at all apertures.

The optics have been designed to give excellent background blur. Try it with the maximum aperture's shallow depth of field. Internal focusing and an ultrasonic focusing motor make autofocusing almost instantaneous. The manual focusing mechanism allows the focusing speed to be switched in three steps using the Ultrasonic Motor.

1. Serial number : 15651.
2. The conditions - Cosmetic conditions : 9.7 of 10 (Slight paint chips):

If you need more detailed pictures,please click this
DETAILED PICTURES 1
DETAILED PICTURES 2
Element conditions : Extremly Clean (No haze, No scratches, No fungus)
Working conditions (Focus....) : Perfect!

3. Supplyed with
- Original Canon metal trunk case (9.5 cosmetic condition)
- Lens Hood ET-123 (9.7 condition)
- Front leather lens cover & rear cap : Included.
- Gelatin II Filter holder included. (9.7 condition)
- Lens strap : Neoprene neck strap included
- Canon UV, Keko ND4, Instruction manual included.

4. Shipping : Shipping rate(Not Included Insurance) is US$100 to All of the world (No exception). We will ship it by DHL next day when we receive the wire transfer. Insurance is optional. If you want to insure the lens, please add 1.5% of the total amount.

5. Guarantee & Warrantee : 10days after when you receive it. In case of escrow, inspection period is 5 days.

6. Packing : Triple perfect & safe package.

7. Payment : Bank wire transfer only (No c2it, No Paypal).Escrow is O.K, if you pay for Escrow fee. We think you can use your credit card through Escrow. In case of wire-transfer, we will discount US$30. In case of using escrow credit card service, please add US$30. Sorry No Paypal, No Money order, No credit card directly.

Thank you. Happy bidding.