This pack has got you covered
I was looking to try my hand at modding the cabling inside my case for the first time in around 10 years or more. I wanted a pack that contained everything I need in one place and so I chose this one here, I have to say it didn't disappoint.
The sleeving itself is nice and flexible and easy to slide over the cables and doesn't let any of the cable underneath show through which I was worried about.
It came with more than enough cable to do my entire psu with metres to spare and I even did 3 sata, 2 fan, 2 case wires and 2 external usb cables and had almost enough to go again. So it covers value for money for me too.
I would say if you are wanting to do a cable mod of your pc and want a kit that gives you all you need and then some this is the one to go for.