All prices are excluding VAT as VAT differs per country. Growing up means understanding Americans maybe had a point with this one. Lastly, no referral links will be provided.
There are rules and regulations set into place in the EU that the prices including VAT should be the same for consumers. Which means that there shouldn't be a difference in price even though there is a difference in VAT rate. When dealing with B2B then it is a different story, then you should exclude the VAT.
It is also not the end consumers problem that the VAT rate is higher, same as that it isn't our issue when the profit tax is higher.