best ShipStation alternative for small business by 5/24/2025??

I pay $49.99 monthly ($20 for using my own carriers, $29.99 for the Growth Plan) to use Shipstation because - it supports Zapier to make label orders and it has triggers once tracking numbers are generated to be sent back to google sheet (Tally form input->Zapier->ShipStation in my case)

- it allows "Customer reference" fields on the label, so that we only need a shipping label, not a separate packing slip for packing purpose (many charge $50+ per month plan to have this )

- it allows me to create different manual stores to differentiate my vendors/suppliers

Please share if there are any alternatives because ship station has an announcement to on the price surge again to charge users like me using their API automation, the price increase will be from 5/24/2025.

I looked at some alternatives:
EasyPost - it seems great but no Zapier interface (only supports MAKE or raw API calls)
Shippo - it does not allow "customer reference" fields
PirateShip - no API 100% purely manual
Veeqo - free but buggy and glitchy (never made it work via API, back and forth with the support)
Startshipit - it does not support Newegg/Sendle