Silverline sandpaper

Some of the sandpaper I've bought sofar have been good others were bad. Not one local shop had all the grits I needed and the good ones they did have were probably overpriced. So I have been searching for a shop that had a full range of sandpaper for a fair price.

Toolstation.nl has Silverline sandpaper 120, 180, 240, 320, 400, 600 and 1200. 10 sheets for €3.46 which seems to be a good price, much cheaper than I've been paying sofar.

Can someone with experience using Silverline sandpaper tell me if this is quality sandpaper? I like to know in advance before ordering a bunch of grits, because I've already had to relap both sides of a japanese waterstone combo because bad sandpaper made it stop working ;)