ok just to clarify what avalon chips
No no no no no. Butterfly labs chips, Lentbt2 sells them on Ebay.
http://www.ebay.com/itm/BFL-Chips-IN-HAND-Not-credits-BTC-ASIC-Avalon-fpga-/201021115217?pt=LH_DefaultDomain_0&hash=item2ecdcacb51
(best start a new thread as this could open up a can of worms I hope it doesnt tho) So according to my maths current conversion rate from USD to GBP for 5 chips it would cost £175 plus the cost of a jalapeño say £350 give or take depending how lucky your are, that makes it £525 plus a H100 at £100 = £625 plus postage and your time.... my maths says its cheaper to purchase a pre built rig?? I am assuming this is something you do over time and add to when you have spare funds...
I just had a look at your thread on how you do it.... Gotta say its pretty bloody impressive
Also are you in the US by any chance....