That's just part and parcel of relying on third parties - you should always price in the maintenance burden of keeping up with potential changes on their end. That burden is a lot lower if the third party cooperates with you and provides an explicit contract and backwards compatibility, but it's still not zero.
It’s not about the maintenance cost, it’s about continuity of service. If you scrape a website things may break at any time. If you use a proper API and have a contract with the supplier you will have the opportunity to make any changes before things break.
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That's just part and parcel of relying on third parties - you should always price in the maintenance burden of keeping up with potential changes on their end. That burden is a lot lower if the third party cooperates with you and provides an explicit contract and backwards compatibility, but it's still not zero.
It’s not about the maintenance cost, it’s about continuity of service. If you scrape a website things may break at any time. If you use a proper API and have a contract with the supplier you will have the opportunity to make any changes before things break.