I know the DVD-Rs have been mentioned before but unsure on the CD-Rs.
Anyways these discs are excellent quality no coasters with these at all. Best DVD/CD-Rs on the market. Price is cheapest i have seen these for anywhere.
100 CD-R £11.99 instore (+ £2.99 delivered)
100 DVD-R £19.99 Instore (+ £2.99 delivered)
If you order both together the delviery charge should still be £2.99