Print a shipping label for each command


I have a new customer for building a Commerce MODX website \o/
But he has a special need : he absolutely want to be able to print easily a shipping label for each command.
I didn’t found any connector with shipping companies on the Commerce documentation and it’s maybe a little bit tricky to doing this.
My customer talked me about
It’s a meta shipping website which permit to select the best shipping way within a lots of international express delivery services.
Upela makes available lots of connectors for Prestashop, WooCommerce etc… but obviously not for MODX
They also give an API and a php connector :

Do you think a Commerce connector could be useful ?
If yes, I’m interested to get a quote and an approximate delay to implement it to Commerce.

Thanks !