Try using a CD head cleaner. If the head has grown a bit of muck, the problem might then be cured. As has been suggested, in a "proper" PC, rather than a laptop, a replacement DVD burner if needed can be got quite cheaply. And I am one who thinks that advertising people who use the word "only" when spending somebody elses money should be filleted in public. £15 might be a bit hopeful, budget about £20 including postage.
I have had problems in the past with "NoName Special" discs, but my newer drives are LightScribe types, which so far means that I need appropriate discs to allow me to print the other side, and "NoNames" have not yet entered that market.