All of the colour negative
amateur films have more contrast than the Portras and other professional CN films like Fuji Pro 160NS or Fuji Pro 400H:
Kodak ColorPlus 200, Gold 200, Ultramaxx 400, AgfaPhoto Vista 200, AgfaPhoto Vista 400, Fuji C200, Fuji Superia 200, Superia 400, Superia 800 and Fuji Superia 1600.
So lots of choices.
Cost is definitely not the right reason to stay away from Provia. In most cases shooting Provia is even the lower cost option compared to shooting Portra.
Because with reversal films like Provia already after processing you have a finished, perfect picture which can be looked at. No need for scans or prints, no further costs for scans or prints.
Overall costs are lower with reversal film.
And even better quality, too:
A slide on a lighttable under an excellent loupe and in projection delivers a 100x better quality than any picture on the (quality limiting medium) computer monitor.
And some excellent labs offer E6 processing at very attractive, low prices (sometimes even lower than C41).
For example in the US AgX Imaging:
http://www.agximaging.com/
For Europe Photo Studio 13:
http://www.photostudio13.de/