That makes some sense... although I'm not exactly sure what the net benefits of outfitting a laptop with near-unlimited computing potential, but trivializing the cost to that extent seems like a bit much.
The Isolated Computer Pad costs 1800 KS and is produced by Kessaku Electronics, which is the frontier computer engineering firm in the YSE and has access to Ketsurui Zaibatsu's immense resources. This keyboard is a piece of civilian hardware, costs something slightly more than a third of the price and is produced by TET, a company that produces consumer electronics for the market.
There's a clear inconsistency with regards to this, especially with that price point, and something needs to give. Either the keyboard processor isn't a quantum-based, or it's actually much more expensive for it to come across as lore-friendly.