Shopping Phrases, Dialogue

Shopping Phrases, Dialogue in English, English phrases to use when shopping, useful words and phrases;

Do you have a refund policy?
Dou you offer a cash discount?
How much is this?
How much are these?
Dou you have this item in stock?
Do you have a smaller/bigger/larger size?
Do you know where else I could try?
Where can I weigh my groceries?
Does it come with a guarantee/warrant
Where is the changing/fitting room?
Could I have a receipt, please?
Dou you sell organic vegetables?
I’m looking for a shampoo.
I’m just browsing, thanks.
It’s not what I’m looking.
Where can I find the toothpaste?