They want $3.99 (!) for a single disk.
For that kind of money, depending on your volume, suck it up and buy an Everest 2 or Teac P-55. The machines cost from $4500-$5000, but if you produce 1000 DVDs a year and use TY thermal printable media at about $0.50 each, you'll be ahead $3500 on media after one year. So the machine pays for itself in a year and a half. Then you get all the benefits of full color thermal retransfer: UV resistant, totally waterproof (I guarantee the TDK media is far from that), and print times are faster. Definitely and investment, but worth it if you're volume is high enough. I bought the P-55 and don't have buyer's remorse one bit.