Jigger this claim 'prices are rising' (Intel's) has been proven (by me) to be false and I have called you out on it before... please stop perpetuating this lie. Adjusted for inflation Intel's price (in dollars - because that's the currency that Intel sell their products in) for the 6700K is pretty much the same as the 2600k!
The UK price over that time has fluctuated due to VAT rising 2.5% from 17.5% to 20% the pound/dollar rate fluctuating from a high of 1.67 in 2011 to a low of 1.38 in 2016 (it went even higher in 2014 [1.71]) and due to stock shortages in the retail chains!
You have previously gone on about the relative size of the Skylake die compared to previous gens suggesting that Intel are conning us there. Firstly this is irrelevant to your claim in this thread (that the price of the CPU's are rising) and secondly I have demonstrated that the savings on die size as a percentage of the retail cost are not likely all that great....
Most of the cost of the CPU's relate to recouping R+D costs + Fabs.
If you doubt me work out the prices in £'s....
i7 2600K released January 2011
i7 6700K released August 2015 - April 2016 (8 months later) price £299.99 on OCUK £/$ rate 1.41
i7 2600k 8 months (2.9.2011) after release £239.99 (on TWO!) http://web.archive.org/web/20110820...?prodid=cp-358-in&groupid=701&catid=6&subcat= £/$ exchange 1.61....
uk inflation calculator 2011 - 2016 shows that £239.99 in 2011 £'s equals £274.81 in 2016 £'s....
Adjust £274.81 for decrease in £/$ exchange rate 1.61 to 1.41 (approx a 12.5% reduction) = £313.79!
So accounting for inflation and £/$ shifts the 6700K is cheaper on OCUK at the same point from its release than the 2600K!
The lack of big gains in performance since Sandy Bridge probably has more to do with physics and the limits of using silicon as a material base for CPU's as Intel are hardly the only firm struggling to maintain previous performance increases with silicon...
Back on to the opening OP as per other posts Broadwell does not have inferior IPC compared to Haswell (it doesn't have much better IPC either!) Clock throttling is at work here
The principal benefit of the Broadwell Xeon line over the Haswell line is the ability to cram in more cores in a similar power envelope. This improvement however is of no relevance to the bulk of Enthusiasts where existing hex and octo cores CPU's are already under utilised by a large degree by most software
OMG it's you again. You keep saying this but it's not true.