I have no luggage allowance going out and 20kg coming back to count for most eventualities.
None of the blades I have seen look to be great deals, so will probably just end up with some creams, maybe a couple of boar brushes, and some AS.
I've got to pick up some clothes and a few bits and pieces i left stored at a friends house in Malaysia, so will probably be close to 10kg coming back. That leaves 5kg for all kinds of frivolous purchases.