"Korewa ikura desuka?" is a Japanese phrase and in English it means "How much does this cost?"
'Where is Sara?'
Anata = you Anata no = your machi = town machi wa = (the sentence is talking about a town) shizuka = quiet desuka = is it? (is this sentence true?) Anata no machi wa shizuka desuka? = Is your town quiet? (referring to where you live)
I meant yubiwa which means ring. Therefore, it means how much is the ring?
mondai wa nan desuka
anata no kazoku WA dare desuka
kore WA ikkura desuka
where is どこ (doko)eg. where is ~? = ~はどこ(ですか)   ~ WA doko desuka?note: as a polite form, we also have どちら (dochira).so, it'll be more polite if you say "~ WA dochira desuka?" than "~ WA doko desuka?"
anata no namae WA nan desuka
goshuujin WA genki desuka
。。。はいくらですか? (...wa ikura desu ka?)
Eigo = English (language) Nan desuka = what is it? Usually, people say "Eigo wa nan desuka?" = "What is english (the language?)" Or, even more common: "Eigo de nan desuka?" = "What is that (whatever you said before) in English?" ie. "Can you please translate that into English for me?"
Most Japanese people will understand the question "how much?" even in English. The problem is that they will have trouble answering in English. So you will want to study Japanese numbers, or else have them write the price down (if there is no price tag). Ikura desuka? (pronounced ikura deska?) means "how much?" and if you point at something, you're set. If you want to say "how much is this?" or "how much is that?" then you should add "kore wa" or "sore wa," respectively, to the beginning of the sentence. Realize that you will still have to point at the object! If they say it in Japanese and you don't understand, you can say "kaite kudasai" or "please write it" (and you would be polite to present them with pen[cil] and paper). Survival Japanese!