There isnt any price diffrence. Its just that when they first come from the factory they make them "straight up" you get a 216 cam or a 224 cam on intake and exhaust. But alot of times you dont need as much exhaust, or you need more intake cam to get a better spread of power. Having a diffrent exhaust cam from intake almost always gets you more power. So my stage 2 cam might be the 232 intake cam with a 244 exhaust. The 216 or catcams stage 1 intake cam might not even be on my list of cam stages except for forced induction applications. I can also give you whatever you want straight from the factory. I make a sell either way, but Iv done my homework on these to get happy costumers.