Delivery charges here are a huge PITA! That is, if you can even find a company that will deliver to you at all. Over the years, I've lost count of the number of times I've found something online that I've wanted, and I'd have even been willing to pay extra, but they would not budge one inch on the "we don't deliver to NI". I get that NI isn't part of the mainland, but it's not like it's hard to get here. Personally, I think the delivery charges should be the same across the UK, period.