Difficulty is always increasing. It depends on how high you think difficulty will rise in the future. This price is cheaper than Bitmain website and includes a PSU, if you have a reasonable offer, PM me (though much less than what I've posted and I will just keep mining with them tbh, I'm getting rid of them because my gf is sick of them, but I can persuade her
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
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lmao...well at least your making an effort huh? She can't fault you for that!
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
Your price doesn't seem to unreasonable to me, you might find some interest. Good luck with your sale.