PS2 Debugging/Beta discs

Hello everyone!

I wondered what these discs might be worth.

Here is a list of the discs:

Naruto Ultimate Ninja 5
Driver Parallel Lines
Brian Lara International Cricket 2007
Aliens in the Attic
DJ Hero
Sonic Riders Zero Gravity Beta 4
Xyanide
Odin Sphere
Winning Eleven 7 International Patch

If possible, I'd like to know what each individual disc is worth. A valuation on the lot is still very welcome, though!

Thank you to anybody who can help!

 

Dates for each disc would be helpful in figuring this out. Can you load them into a disc drive and check for any dates for each accordingly?

For the ones with no dates on the disc obviously

 

Excellent, thank you! I didn't even think of this. I'll fire up the old laptop tomorrow and do that then.

Thanks again for your reply

Edit: unfortunately I can't find any dates on the utility discs, but those are the only 2 without dates on and I'd quite like to keep those ones after all. Thanks again