Question about Mitsumi dvd-r media

[StartingLine]

here in my country there is a place that is selling ps2
dvd copies burned on mitsumi media
i have a couple of them..
and they run well on magic crap chip

is this media any good?

i think it should be very cheap cause they are using it to sell pirate software ..

where i can get that mitsumi media..?
it´s gold on the top and on the back