Cost is the total cost that you pay for something when you buy it Price is the total price you sell it. So, while some people use the two words interchangeably the reality is different. Imagine you are Apple and you bought in an Iphone for $500 and shipped it to Amazon for $5 the total cost to Apple is $505. Apple sold it for £550 their "price". Amazon paid $550 for the phone and sold it to me for $700 of which $5 was Amazon's cost of shipping. So it cost Amazon $555 and the price was $700. To me the cost was $700 and I have no price for it as I have not sold it. Charge is just another type of cost How much do you charge for a full-board booking? ok How much do you charge for High Tea for a person? you don't need "the" What is the price of High Tea for a person?. How much does it cost?= what price is it? you don't mix the terms What is the price of High Tea? How much does it cost a single person for meals?. How much will the trip cost you? How much do you charge for High Tea for a per person? What do you charge for High Tea for a per person?

All the sentences are okay, but I don’t know what a “full board booking” is. How much just means what do you charge.