Data fees for whom?How much would you guess the data fees would be separate from anything else?
TD Ameritrade provides their market feed to their clients for free if that is what you were asking.
If you're asking what the cost would be for whole data pipe for all US traded stocks for the server-side model - https://www.nyse.com/publicdocs/nyse/data/NYSE_Market_Data_Pricing.pdf - that is just for NYSE. Look at page 28. The use for scanners would qualify as "Non-display use". I am pretty sure that "per user fee" would also apply. Not sure what "Enterprise fee" is.
It is not cheap.