I'm don't wanna spend more than about $80 to $100 on the psu so I don't think I can make you a fair offer for that. Also 850W would be overkill for me and I've never heard of Seventeam but that might be because they don't trade in Europe.
EDIT: A quick google showed me they make PSUs for Coolermaster and Silverstone sometimes so they must be pretty good.
You're choices for buying pc parts in Ireland are fairly limited, on dabs.ie the kinda PSU I'm looking for would be €70-€80 ($100-$115). I'd be very surprised if newegg or tigerdirect ship to Ireland because I think newegg don't even have a Canadian branch
I'd consider $100 shipped. Anything over 4 lbs. has to go Priority Mail International though, which this will definitely fit into that category. Let me see if I can cut-down some spare boxes I have which would save on the shipping weight.
I was wrong in my previous shipping estimate, as that was for the USPS "Medium Flat-Rate box", but the power supply's box is too big for that. It only fits in their their "Large Flat-Rate box" and that costs $58.50. However, using my own packaging it would be $48.15 for Priority International.
If you can do $103 for the psu shipped then it's yours.
And here is my eBay seller id for a reference: cargeek33
USPS Priority Mail Medium Flat-Rate box is $45, Large Flat-Rate box is $58, your own packaging might be cheaper but not by much. Anything over 4 lbs. has to go Priority for international shipping. UPS and FedEx international shipping prices are completely ridiculous, so it's not even worth looking at them. Hope that helped.