I can't speak to this case, but dev kits and SDK/documentation are often two separate SKUs and the latter has a higher price. If I remember the Crash Bandicoot

I can't speak to this case, but dev kits and SDK/documentation are often two separate SKUs and the latter has a higher price. If I remember the Crash Bandicoot guys found a hardware bug with memory card saving because they rolled their own code rather than using the SDK they didn't have.