I have a MyUS account for this stuff.
Stuff gets shipped to a Florida warehouse with my account numbers as part of the address. They consolidate orders into one shipment and handle the customs stuff required at that end when I upload an invoice to show the value.
Of course there's the VAT, duty and handling same as any other method, but the shipping rates are pretty good.
They ship so much on their account around the world that they have very good shipping rates.
At the moment 10Kg door-to-door via FedEx Economy 2-5 days = $86, FedEx Priority 1-3 days $91, DHL Express 1-4 days $112.
Cheapest is unnamed Budget Economy 5-10 days at $80, which last time I used it was FedEx anyway, but just less priority, so they fit it in when they have space available, so a little bit cheaper.
Volume surcharges don't seem to kick in for bike sized stuff, only 2.3m + and pallets, 150 Lbs + etc.
All the best,