Budget: 27000 UAH Deadline: 1 day
For each type of exchange, a processing script needs to be written. If it is a YML export like on Prom.ua, then the script will be able to process all suppliers who have such an export. If it is an XML export like for Google Shopping, then the script will be able to process all suppliers who have such an export. If a supplier provides API access to their products, then it needs to be written individually for that API. If the supplier does not provide anything, then it needs to be parsed. A parser needs to be written for each such supplier. Universal scaling without regard to suppliers is not possible.
I professionally engage in parsing and automating product updates on Prom.ua and various CMS. I can develop a system for you according to the specifications. You can see in the reviews that I have done something similar many times.
The cost of such a system will be at least $2000. The cost includes everything you described in the specifications if for all suppliers whose export is like on Prom.ua or Google Shopping. All other suppliers need to be evaluated separately after reviewing each one.
You can look at my reviews for completed similar projects. I can also send screenshots of the systems I have created in personal messages.
If I have piqued your interest, I would be happy to collaborate.