Yeah, the Schneider store has like zero volume.
I remember looking into fedex & co. when I started selling stuff here and 150 seems pretty much in line with what I was quoted (regular 2kg package).
Acolyth.com uses Finnish post. I understand that you maybe don´t have such public services in US, but in Finland you can rely on Finnis post. Always. Acolyth sends tracking code to customer for each shipping. The deliveries had managed 100 % and 37 € for that is not much. It is money, but is far away from 150 USD.