In all fairness how many people run an electronic boost controller with a PowerFC? Most other brands have this feature on the ECU, so there's a saving already.
Also enabling different features like shift light, nitrous control, 2 step rev limiter, aftermarket dash compatibility, logging, etc etc. If you buy a PowerFC, EBC and some sort of 2 step rev limiter you're already over the price of a Haltec, and the Haltec isn't limited to that specific model car.
Not trying to play devil's advocate here but have been weighing up a whole bunch of different ECU's for a new car project, and once you look at the electronic management system as a whole it's expensive no matter which road you take, and the more options the better - even if you think you'll never use them down the track you can always start experimenting..