They raised the price from 14.99 to 19.99 on Sunday evening and then from 19.99 to 24.99 today.
I can see them raising the price due to the original launch being a "special price", but they could have let the community or at least owners of current hashlets know that the price was going to raise again or that the promo period ended. Very poor communication!
If you're an owner the price change shouldn't concern you.
They use hashtalk for announcements, check it daily and you'll know what's up.