I know this sounds so simple, but I just typed, taiyo yuden, in a google search and there are quite a few websites that claim to sell Taiyo Yuden cd-r media.
The cheapest was from a company called Rima.com. They sell 100 packs for $28 US. They also sell other media i.e. cd-rw, dvd-r(w), and much more.
I checked out their site and found that they are out of Industry Ca., which is kind of deja vu because I used to work in the city of Industry.
Here’s the link: http://www.rima.com
This is my first post, but I hope it’s helpful.