The pre-sale for Wirex users where done at $0.01, at a limited supply. Each user could by a max of 50,000 WXT at first, and then on the 27'th they made all the Wirex users able to buy an unlimited amount. They sold out all the WXT for the sale in 14 minutes.
The OKEX pre-sale sold all their WXT in the first round, over-sold massively, making many users on the OKEX sale not get many at all.
As a 50% discount on the Wirex card and exchange fees require at least 100,000 WXT the demand is growing for those that wants them.
Nothing really surprising that the price is going up with the limited supply of available tokens and the demand from users that want them to have the discounts.