Another factor that these simplistic price comparisons tend to overlook is that EU prices for retail customers (as distinct from business customers) are obliged by law to show prices that include sales tax. Here in the UK that adds 20% to the retail prices that are displayed. But this sales tax (VAT) is not payable on any goods exported to locations outside the EU.
It's also fairly commonplace to include shipping in the price displayed, which will typically add eg GBP10 for a properly tracked and insured consignment. So whatever price you may be looking at, deduct eg 20% and then a further deduction for any included shipping and that will give you a more accurate base price for export shipping.
Prices in Europe do tend to be somewhat higher than eg in the US (partly because of things like the higher cost of running business premises, employing staff etc), but once you strip out the costs of the mandatory sales tax and shipping, it's not by nearly so much of a margin as people sometimes think.