I ordered a shirt from Frank & Oak with the regular shipping option on October 1st and received it on October 6th (three business days). I was very surprised at the fast shipping time, especially since the packages ship from Canada. I had a coupon code that I had an issue with, emailed them, and got it sorted within hours.
The shirt is nice quality, cool print, slim fit. The friend that I bought it for is a small dude, so I love that they have XS.