GTX 1080 ti GPUs

Hi everyone, I am selling a few GPUs to upgrade to a new workstation. All GPUs below are purchased in late 2016 to mid 2017, they have been used in a deep learning workstation since then.

EVGA GTX 1080 ti founders edition. ($550)
Possible to add EKWB water block, +$100.
MSI GTX 1080ti Seahawk with AIO cooler ($600)
EVGA GTX 1080 SC ($450)

Feel free to msg me with more questions.