I have a used, but well taken care of, Tamron 200-400 (not 200-500)
tele lens made to be used with Canon EOS SLR bodies, for sale. Asking
$325. Comes with tripod collar and front / rear lens caps. Will accept
paypal, checks, or USPS money orders. Located in Southern California.

Also have:

Vivitar 100-500mm lens for Minolta X-700 series SLRs. Manual focus, MD
mount. Clean, used, but in good shape. Asking $250.