Going Shopping

I live in Guangzhou now.
I spent two days on shopping on Beijing Road, which has a great range of brands at discount prices. (<<This sounds a little like a commercial ;D) However, I was scared by the prices.
I wanted preferred a 100% cotton checked shirt, which had a list price of as 639 yuan with no discount, as it was a new variety of Texwood! (It is better to say "want" over "prefer" because prefer usually implies some type of comparision. "I preferred the green shirt over the blue one.")
I can't believe such an ordinary a common shirt costs deserves so much!
My friend laughed at me and said: "you are out!"(I don't understand this phrase. Maybe she is saying that you are out of touch with how much goods cost now?)
It's terrible! My salary can't keep up with the rising price of goods.