VAT is 15-20%, customs 5-10%, shipping ~50€, fees for custom handling 10-20€.

It's pricy, but it's not going to double the price.

Even better - some countries have 0% import tax on computers (just VAT). I am not sure if this is an EU-wide regulation (I would expect so, because it is a single market), but in The Netherlands it's 0%.

I recently ordered a keyboard from Taiwan. I got charged the 21% VAT plus a few euro administration costs by the shipper. Mind you, I would have paid the same 21% VAT if I had purchased a similarly priced product in The Netherlands. So, you are down to shipping cost, many companies have different options. Sure, if you want something on your doorstep in 2-3 days, they are going to charge 80-90 USD/Euro shipping, that's simply what it costs.