The first time I called Engle, Mark Engle answered. The cost of thier total custom cam, to my specs, was $195. Cheaper with good lifters than a Comp shelf grind and it did everything it was supposed to. A custom cam grinder will talk to you assuing you take the time to listen and really understand what they are saying. The big company tech lines are useless once you have some idea of how a cam works.
As far as experience w/costs... Crane is the higher end of the cost spectrum, but I frankly love a lot of thier cam grinds and overall I've run more of thiers than any other. Bullet is close to the Comp custom cam costs. But, Bullet makes a phenominal cam too.
The biggest decision is not who sells it, but what it is, when you talk cams. You will hear this a lot, but cost should not be a factor in cam choice. For me, it's about accuracy and quality. If I buy a camshaft and it's not exactly what the card says I will probably not run them again. For me, MP reached that point almost a decade ago.