These discs are manufactured by the world renowned Taiyo Yuden manufacturer (just read the reviews). They are DVD-R, Verbatim branded and I should think they come in spindles of 50. For delivery select Economy Courier @ £4.99 then use the Google Checkout option to pay. This will bring the total down to £35.85. Thats just 18p a disc!
200 Verbatim 16x DVD-R (Taiyo Yuden) - £35.85 Delivered (Google Checkout)