Unfortunately, there are several reasons why the prices can change during ordering.1. Collection or search page price vs product page priceThe price on the collections or search page is the price of a kit without any options. But for example, kits from halogen to bi-xenon will be more expensive than the price mentioned. This is because these kits have options like bulbs and ballasts that can be removed and the price will be lower, but are added by default because you usually need them. The price on the collection or search results is without these options and therefore the lower price.The product price with the options is calculated on the products page and at the moment the app we use for the product options can't show the price on the collection page because it isn't calculated yet.2. VAT percentageThe VAT is based on our domestic 21% VAT. But when you change the shipping country, our webshop will calculate it based on the VAT rate of the shipping country. So this could also be lower, for example 19% or higher like 23%. For country's outside the EU it will be 0%. For the UK it differs based on the price. The VAT rate can be seen in the right part of the check-out, where the price is shown.3. Currency / exchange rateOur webshop program automatically calculates the price in different currency's based on the exchange rate (our default is EUR). Because of the exchange rate and rounding, the price can differ a bit.