Oxford Shop has 50% off their Winter Range, plus a further 25% off reduced prices for Oxford Card Members.
I believe you can sign up in store to get the additional discounts.
The 50% may apply to more than the Winter range as one store I saw had signs saying 50% off everything.
They are always on sale at around that price.I can remember probably 5 times within a year the store has been ~60% off
They are overpriced and the shirts are only really worth ~$50. There is no way i'd pay $200 for an average shirt.
The suits are reasonably good value though and they organise tailoring for you.