These double layer discs have a purple/silver top surface with the familiar RiDisc branding at the top of the disc and a 4-lined area in the bottom right corner to display the disc contents.
In common with other double layer discs, these discs have a data capacity of 8.5GB which equates to 240 minutes of video in standard play mode meaning you can fit even more of your favourite memories and yet still be assured that they are secure and protected.
ADVDInfo: CMC MAG D01/CMC MAG D04
Packaging: Spindle tubs of 25 discs
I haven't personally used these, but I am very picky about DL Media anyway, at this price though they could be worth a go, especially if you can order some other stuff from SVP at the same time and the reviews on the site don't seem too bad.
I'm not sure how much the delivery will be but the last time I ordered discs from SVP it was around the £2.49 mark.