I recall there was a sale a few months ago and it was around 30% off. Discount does not apply to any of the classic collection though.
Offical Barbour Thread - Page 91
Oddly enough, this photo has the buttons non-screen accurate, as they are calling it, while some others have it SA. It's very strange. What's funny is that even though Bond doesn't use the storm flap, you can still see it tucked in in one of the shots, so in their zeal to make a Bond jacket ("Commander Bond") they eliminated something that's still on his coat. I will admit though that it is kind of an annoyance--I hardly use it, and I'm not sure I'd miss mine were it gone.
http://www.thehighlandsstore.com/ One on Regent St and one off Oxford St - which is a little treasure trove of Barbour stuff.
How are the prices if you were to compare the Barbour Store and The Highland Store, seems to be more or less the same online but is there any difference in store?
Doubt you'll find anything off the shelf that will be a slim fit with your frame. Your best bet is to find a retailer and try stuff on in-store. Chances are anything you get will need to be altered for a slim fit though since sizing down will likely result in sleeves way too short given your height.
Going to get myself a Barbour International. How do these jackets fit? I have the Classic Beaufort in size 36, and I'm pleased with the relaxed cut. I'm 5'9"-5'10", ~145 lbs, Asian. Should I get it in the same size as my Beaufort? I hear that it runs large, and I don't want it to fit any larger than the Beaufort.