Charles Tyrwhitt has a really good sale. There are two sales actually.
1) Buy up to 5 shirts for $39 each and get a free tie. You can buy any amount up to 5. Click Here for more info
2) See the below graphic, 4 shirts for $160 (I received this one first but the other is clearly better)
My personal favorite are the non-iron slim fit. No need to waste time and money going to the dry cleaners to have your shirts washed and pressed. Wash them in a regular washing machine, shake them out, and let them hang dry. Most of them look great. I did have a couple where the non-iron didnt perform well and always looked wrinkled. I returned those. They offer a very good 6 month return policy.
The address for the New York City stores is on the picture.