Currently get $50 voucher for $25 or $100 for $50 on Living Social.
Living social actually had a 10% voucher promotion. So I ended up getting $100 voucher for only $45. It's a great deal for me being that I only buy these shirts. Charles Tyrwhitt is also running a promotion now 4 shirts for $184. So essentially with this living social voucher you are getting 4 shirts for $129 ($32 a shirt). That is a great deal for these shirts!