Have that somebody show you it running on the 400 buck laptop.
The truth is that gaming laptops are premium machines running from about 1k to 2k bucks. If there was a 400 dollar laptop that ran Starcraft everyone would buy that and it would not be a secret.
I thought for sure those $400 laptops wouldn't run Starcraft 2 but somebody knowledgable told me they would. Is this realistic? Also I've been advised to look for an amd graphics card, not intel.