Sending parcels internationally

Hoping some of you might be able to share your experience.

As a sole proprietor if I wanted to send small goods (max L+W+H=90cm, up to 2kg) from Switzerland to elsewhere in the world, what’s the cheapest or best way to do it?

Swiss Post’s prices seem prohibitively high for low-value goods…I was thinking of nipping over the border and sending via Deutsche Post but I’m guessing there are customs limits/rules that might prevent this.

Would any of you be kind enough to share any tips?

1- Swiss Post: CHF30 for sending to the UK, France, Italy, etc; CHF37 to USA, Australia, etc- https://service.post.ch/vsc/ui/sending-type

2- Deutsche Post: EUR11 to France/Italy; EUR14 to UK; EUR18 to Australia/USA - https://www.deutschepost.de/de/p/por…s90cm/Guenstig