I have upgraded lenses through the recent years and these lenses are available. The glass is in excellent condition in each lens. All are Nikon mount, full frame. Lenses will be shipped FedEx ground to conus

Tamron SP 24-70mm f/2.8 Di VC USD Lens for Nikon DSLR
Lens has been cleaned and autofocus repaired under warranty.
Purchased Oct 2013 from authorized USA dealer (not gray market)
$600





Tamron SP 150-600mm f/5-6.3 Di VC USD Lens for Nikon
http://tamron-usa.com/product/lenses/a011.html
I have only used this lens about dozen times. Glass is excellent condition. Purchased Aug 2014 from authorized USA dealer; 6-year USA warranty (not gray market).
$600





Tamron 28-75mm f/2.8 XR Di LD Aspherical (IF) Autofocus Lens for Nikon
http://tamron-usa.com/product/lenses/a09.html
Extra lens hood.
Glass is excellent condition.
Purchased from authorized USA dealer but 6 year warranty has expired (not gray market).
$200

These 3 lenses are still available.

Tamron 28-75 has been sold. The 24-70 and 150-600 are still available.

The 150-600mm has been sold :-) Only the 24-70 is still available.