Back to the origin - "why cables can be expensive"
Old ways
From my experience the cable costs less to produce in many cases than the packaging.
Without good reviews and constant mentions in magazines, then forget it, and that costs serious advertising money.
A retailer will not take a cable unless he makes a serious profit margin, normally a doubling of price but I have know for them to ask for tripling of price if it is a new product, no matter how good.
So £10 raw costs, call it £10 packaging, call it £20 to cover marketing costs, call it £40 manufacturer profit margin (times 2 direct costs), call it £10 to cover the difficulty to getting the retailer to pay you (i.e. interest on extended credit) = £90.
Retailer wants minimum another £90 for him (if you are lucky) so cable retails for £180.
New ways
Direct sold with 30 day return for refund.
Ebay is best as you get reviews and build up a reputation.
No packaging, just a jiffy bag.
No magazines, no reviews, no advertising. Just on-line recs through forums and feedbacks.
So £10 raw cost, £2 to cover ebay / paypal and returns costs, £3 to cover P&P, manufacturers profit (times 2 direct costs) £15 = £30 selling price.
Sort of a no brainer, don't you think?