Come and buy your clothes at Huaxing's great sale!Do you like sweaters?We have sweaters at a very good price---only ￥25!

Come and buy your clothes at Huaxing's great sale!Do you like sweaters?We have sweaters at a very good price---only ￥25!Do you need bags for sports?We also have great bags for only ￥12!For girls,we have T-shirts in red,green.and white for only￥18!For boys,you can buy socks for only ￥5 each!And that's not all!
Come and see for yourself at Huaxing Clothes Store.
这篇短文虽然简单.但有些语法知识不太懂.请高手指教.
1、at Huaxing's 这里at 能换成in
2、great sale做什么成分,这里是不是省略了什么介词?
3、We have sweaters at a very good price这里have可以换成sell吗?
4、for sports for only ￥12 for girls for yourself这里出现了很多for请问这里for
5、Come and see for yourself 这句话结构如何分析
6、for only ￥5 each 这里each是不是做副词用呀
7、we have T-shirts in red,green.and white for only￥18!这里in red和We are in red是否有不同之处
啰嗦了很多,请多指教.