You've fallen foul of the Americans outdated love for Imperial measurements. That's about £140 for 1,000 feet, not 1,000 metres, so multiply that by about 3.3, or a bit less than £500 in total. Also, bear in mind that US online costs don't include any sales tax whilst UK online costs are typically quoted including 20% VAT.
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This site is a decent UK source for fibre & copper cable. It quotes (exc VAT) 54p per metre for 4 core optical fibre (or £540 per 1,000 metres). Whilst five pair external telephone cabling is 63p per metre (£630 per 1,000 metres). Wildly different to your £80 per 1,000 metres (I don[t know if that's partly down to the number of pairs of just that this site is very expensive). At least at this site, the costs are not dissimilar. I suspect that, in reality, OR costs are much lower in absolute terms and are dwarfed by the labour involved (which, for the same number of cores/pairs, will be higher for fibre.
Edited by TheEulerID (Tue 09-Feb-16 10:33:19)