Experiences with Datawrite DVD-R 4x?

Hello!

I´ve found this on a Shop:

Datawrite-Prodisc DVD-R 4,7 GB 4x - 100 Stk.in CB (Minus-R)
Artikelnummer: 4101#

DVD-R 4,7 GB (G) Datawrite-Prodisc 4x in Cakebox 100 Stück

MEDIAINFORMATION
Media code/Mfr ID
Prodisc S03
Media type
V2.2 DVD-R
Media Id Code Speed
unknown
Write Srategy Speed
4.0x 5540KBs
Current Drive Speed
4.0x 5540KBs
Write Rotation Control
CLV
Linear Density
0.267um/bit

EUR 35.90

100 pieces for 35,90 ? is chaep, maybe to cheap for Prodisc S03. Or can it be, that those media are low-quality (B-Grade)?

I use a LG GSA 4082

Thanks