Let me get the ball rolling.
I'd offer you 0.1 btc (@current price of ud$990) for the R4, no psu, but include shipping to Singapore via the cheapest freight-forwarder you can find. I would pay for escrow.
Reason for the price lower than asking:
1. diff increase, btc price down. double whammy
2. used unit, no warranty
3. seller would have already achieved ROI since the unit has been mined for months
4. with hashrate at only 8.7THs, this price might not get ROI, EVER.
I'm a serious buyer, forgive me if i've offended anyone here.
ps. pls correct me on the above points, if i'm wrong.
Offer rejected.
You seem to have no idea how to make money with a miner then only take the dayly profit minus the daily energy costs...
The miner is used, but you have this problem with all second hand miners. Don't like it? Buy a new one.
My achieved ROI does not reply on the price, I took the risk of buying this miner back then. If I achieved a good ROI that is up to me and no reason to sell it much lower (really don't get this argument...)
About point 4; Do your math again, your wrong.
This R4 is a good and silent miner, still makes a nice profit and has a nice value. I think you are just lowballing and this miner will be sold for a good price, not this ridiculous offer.