yeah, I've got an opinion about that!
They state $300 core, $298 dyno session which they don't state mandatory or optional, and shipping starting at $150.
I prefer clear-cut pricing and no bs. So far, they have a $748 dollars in charges before you even pick a motor. Not to mention it's not clear of any charges for getting the core back to them, or if they'll accept your core to refund you that $300.
They name drop some brands and types like hypereutectic and melling but have no part numbers or additional information. They do however, show that they use parts store brand (pioneer) flywheel, balancer, rocker arms and rod bolts.
I'm not bagging on them, but I'd sure call them and find out what exactly is going into my engine.