I don't think there's any resistance added to that cable, one would need to use a 75ohm impedance adapter (at least for an ER4S)
And I agree, the price is a bit rich when they sell a similar cable with Shure plugs for around $34
Interesting. Would be much more usable with resistors (+capacitor for B). Cable looks nice, and you could use an ER•4PT to ER•4S adapter to get an "S - 27Ω" Ety. But I would buy AWWAN's adapters (choose P, S or B) and then use whatever Shure-compatible cables you prefer. The same work/risk would be involved with swapping over to these resistorless cables.
Well, there are these: (which you've probably seen)
I just find it interesting there's even an option on eBay, usually Ety cables are few and far between.
Exactly, so get AWWAN's adapters from him on eBay with S/P/B impedance (P version: http://www.ebay.com/itm/290630811020), and then whatever Shure-compatible cable you want. That way there's no need for a clunky adapter. AWWAN puts them inside the adapter on the PCB that holds the pins. Very tidy solution.
I chose these factory Shure cables with 1-button remote: http://www.ebay.com/itm/131085473524
They feel really nice and it's great having the remote as I use a Note 3 as transport.