Well both the same. Grill.MY even asked for full payment if want to have the 5888 promotion and after payment you only could get the stock after 3 months as part of T&C, I guess it is more risk if the company ran away and we not even could sue it.
As for the Company "D", yes if is lower the price but I beleived end of the day it still will show the full bill to customer and customer should review before sign up...
End of day, both also try to get business lol