While everyone has already stated it, the 14.99 USD price tag is pretty much solid there for a while. The reason a lot of fighting games in particular have a discount at the start is usually due to them being finally brought to PC after a period where console was your only option for it. Most other games with week one discounts are generally done as a sign of good faith while going into/out of Early Access.
The majority of these games are already more expensive than TFH will be, even with their discounts applied.