for the price of 2credits over a model/year license credit.. as in if let's say an '04 Silverado was locked, but you already have the year/model license for them, you pay an extra 2 credits for it to get unlocked...
the average joe using hptuners won't want to invest $400 on getting their pcm unlocked, where as the tuner shop/garages should have this model/year license.. hence enabling the customer with better service with helping out with the problem..