Is booking.com a scam?

I was trying to book a hotel for some friends around the month of April during the fading cherry blossom season. I first looked at accomodations on booking.com and Agoda etc. but the prices seemed to be exorbitantly high around 100k yen for 4 nights. I checked the same hotel on Rakuten Travel and Jalan, (which were the top two websites on Google search so I assume they're legit?) and it was almost half the price for the same room. Somehow the hotel on Jalan was also cheaper by 10k yen if I booked with breakfast, than without (seems like a typo). But this leads me to believe booking.com has very scammy prices. Or is it just a whole different situation?