How much are these shoes? Is this right?

[love-you-mom]

How much are these shoes?(pair of shoes)
How much are these sunglasses?(I'm talking about 1 kind of sunglasses)
How much are these trousers?(I'm talking about 1 kind of trousers)

1-Are these questions okay?



2-How much (is-are) the book and the pen?

[Rover_KE]

1. Yes.

2. 'How much is the book and the pen?' (if you are considering them together as a single purchase).

'How much is the book?' [wait for answer] '...and the pen?' (if you want separate prices).

'How much are the pen and the book together?'