Bear in mind there are 6 hoses in total
4 of these are sold in the regular kits that you can buy from the likes of goodridge etc.
2 of them are the rear most ones for the rear brakes, they are part flexi and part hard brake line (a;pparently)
The only person who seems to know about these is C&R Enterprises in Nottingham as they told me they have worked in conjunction with goodridge to get them made specially, so if you do change 4 of these brake lines then 2 will still have the flexi part on them.
I got a total price of £270 supplied fitted and full system bleed for these off C&R
website
http://www.candrenterprises.co.uk/
I have used these guys in the past when no one else seemed to be able to bleed my brakes (JBS included) he sorted them for me, the guy who owns it really seems to know his stuff, but I found that they certainly know how to charge you. (I ssuppose no different to any other specialist, JBS charged me over £100 and never actually sorted the problem)
Cheers
James