SPS price is going down. What is wrong with it?

SPS token value was $0.8~$0.9 USD when Chaos Legion pre-sale began to open, but now it is $0.634. I expected for it to go up because many users can buy the token in order to purchase Chaos Legion packs. But it is going down. It is not my expectation. I don't know what is wrong with SPS.

SPS price of Chaos Legion pack is going up. I will purchase in a few days.