@travo You should be fine in terms of charges / VAT. They’ll sort it so that what you pay them is what it costs.
Can take some time to arrive.
Re SRAM warranty, I really don’t know. Some companies will split warranty by country, so if bought from Germany, you have to deal with the German distributor / German office to get support.
This happened to me when I bought a Topeak pump from Bikester. Spanish distributor didn’t want to know as I was in the UK, and the UK distributor didn’t want to know because I had bought from the EU.
So check with SRAM first – there should be some details on their website.
Post-Brexit, warranty support is a lot less straight forward.