Need quick info on Hacker C50 10XL

Hey guys,

I was just at my LHS and while in the office, I noticed a Hacker C50 10XL sitting on the desk. I asked about it and was told that a guy ordered it, but was sent the wrong motor and he is now wanting to get rid of it.

Does anyone know anything about these motors? The Hacker site says the kv rating is around 1600kv. Is that loaded or unloaded?

Are these motors any good? About what do they sell for? I really wasn't able to find much info on this particular motor. Are they any better than the Feigaos?

I might be able to get this thing for a really good price.

Thanks.