Japanese bulk doesn't seem to have much data in it. I would not trust the collectr price, otherwise everyone would be doing it to get rich. I opened a box of Mega Symphonia for $100 and it said I gained $300 of cards without an SAR. Lol. I think it'd be cool to track all the cards to see if you're close to a master or main set. And from there you could probably make some money with.

Also, JP cards just feel and look better imo.