at a good price 还是 for a good price

价格合理是at a good price还是at good price at a good price 还是 for a good price at a good price be on a good price 还是 be at a good price at a good price是高价还是好价钱? at a very good price怎么使用? at a very good price翻译 at very good price for only 13 yuan还是 at a very good price for only 13 yuan?为什么?用不用加“a”?为什么? 什么a very good price,in,at with还是for,急如题 是at a low price 还是in a low price in half a price还是 at half a price? They _____ at good price.用have还是are at a very good price be动词at a very good price前要加be动词不?如：these apples are at a very good price, We have sweaters at a very good price-only 25 We have socks at a very good price的意思 sweater,good,is,at,this,price,a(.)连词成句 连词成句 have,a,good,we,shirts,at,price. We have sweaters at a very good price ------only 25