USPS has different type of shipments. Really low, medium, expensive, horriible price. If you can wait 2 weeks, it should cost not much.
To Sweden: First class international cost $34.50US for 1 kg. I selected shape, package
https://postcalc.usps.com/Or a box of 9kg for $87US
Priority Mail International® Large Flat Rate Box
USPS-Produced Box: 23-11/16" x 11-3/4" x 3" or 12" x 12" x 5-1/2"
Maximum weight 20 pounds
You need to click around to find lowest price. Not the expensive Express with a few days international shipping. The problem is that some seller are not willing to use the cheapest option. I have got a ca, from ebay, $34US 10-14 days shipping, Dynoman cam within 5 days but more than double shipping.
Many eBay sellers know how to do. I'm sure that the wrong shipping options have a negative effect on the business when tge total will be too much. VAT and customs will be added to the high shipping cost too. If I pay $100 in shipping, VAT and customs will be 28 for shipping only, plus the part and customs fee of $15-30US depending on size