Looking for Zf6

[Im_Strokin_ur_Cummins]

Right now i currently have an E99 f250 4x4 with a 4R100 tranny in it but im looking to get a Zf6 tranny instead.I have shopped arund and most are $3500 and up but since my truck is worth about that much i dont want to spend that. Anyone know a relible vendor that has them cheaper then $3500? I found a place online that sells them for a little over $1800 but a little worried about quality. Or if anyone has one they would be willing to sell or swap for an auto but the chances of swapping I know are close to none lol.
Any suggestions? thanks guys

This is the site:
ZF 6 Speed Transmission, Rebuilt ZF 6 Speed Sale.

[copracr]

I am looking to trade, you want to pm me your email and we can talk?