If you're looking at normal presses etc. then by the time you add in shipping and any duty/VAT for larger orders it's not really worth it.
Some of the more expensive progressive presses and "ammo plants" may work out a little bit cheaper but not by much.
However, if you're there for a visit it's certainly worth bringing stuff back, I picked up a new RCBS RockChucker for under £100
However, just be aware that bullets and cases are no longer allowed to be exported without the proper paperwork under ITAR