Anyone here ever traded and shipped to Belgium? Curious of what the price would be to send a box there. Cheers!
UPS has a tool on their website where you can estimate the cost of shipping something, may be helpful. https://wwwapps.ups.com/ctc/request?loc=en_US
There are a lot of threads relating to international shipping. A search would somewhat easily find this info. When it comes down to it, USPS provides the best rates. Flat Rate boxes seem great, but packaging a box safely for the +20% increase in price is worth the overall troubles.
You pretty much need to go USPS with a flat rate box for $50-ish. Fedex/UPS will run you (possibly well over) $100 to ship a box. Long story short, it doesn't happen much, except for extreme rarities. You can just buy 99% of what you'd want to trade for online easily enough.