Bigpockets have just slashed their Ritek G05 printable disks by £2 to 10p a disk. TBH these are the disks i go for EVERY time - solid, reliable and hardly any coasters at all in years of use. Cant recommend these disks enough, my favoured choice that combine perfectly with Pioneer burners.
Also they have reduce the G05 dual layer disk by £1.50 so great news if you use those as well.
Usual delivery charges apply from BigPockets but add something from the free delivery section to offset the charges.