Do not buy express delivery. It’s a rip off (£10) and I ordered my GoPro express delivery and then a lense mod on standard delivery the next day. They arrived at the same time, around 4 days later, so I requested a refund of express delivery cost (especially as standard delivery says 2-3 days online). They’ve now said that express delivery is 3 (?) days here and refusing to give me a refund despite the fact I clearly didn’t have to pay for express delivery. They seem to be ignoring my email after I challenged the decision, too. Product is great; customer service is not.