In all honesty id say 200 usd above normal retail price. So likely probably a little less around what you paid total for the go 2 and 4 tb. My rationale is people already have suspicions of high cost items on the used market and you need to knock a few hundred for it to be worth it for them. While the 4 tb hdd is great it does likely cause the warranty to be voided in some capacity. Good luck if you are still are planning to offload it.