Ordered 15m of 2x6mm cable & received 14m! Measured it 3 times to make sure I wasn't making a mistake. I needed 2 x 5m so I won't be returning it, but I can't stand dodgy practices like this. It will be the last time I order from this seller. I recommend everyone to check the length of the cable when you receive your order.
Edit: Upgraded from 1 star to 2 stars because the cable did improve the audio. Still wouldn't order again. I would rather give another honest seller a chance.