inanition02 :
People complain about the prices on the Surfaces devices all the time (oh the keyboard should come with it, oh the pen is expensive..) - but the Surface Pen is the same price as the Apple Pencil ($99) and the Surface Go Type Cover is actually $60 cheaper than the Smart Keyboard ($99 vs $159 - provided you compare the Black Surface Go Cover to the Black Smart Keyboard).
Long term Surface Pro user here.
I think the price of the Go is pretty reasonable, but I do agree with @AndrewFreedman that advertising the price without the keyboard is pretty misleading. Love or hate iOS and the iPad Pro, but it's a thoroughly usable device and OS without a keyboard. My wife has spent hundreds of hours on her iPad pro creating designs for her small business and hasn't once wished she bought the keyboard.
I love my Surface Pro and do far, far more on it than I could ever do on an iPad. But I can't imagine anyone buying it, or the Surface Go
without the cover and being satisfied. Microsoft still have some settings and features that can only be adjusted in the old control panel format, which is pretty rough with touch. Even something basic like File Explorer isn't a great experience with touch.
The headline price should be the device + TypeCover IMHO, because that's what almost everyone actually needs to use the device properly.