Please note that Amazon does not return photos, descriptions, features, etc via their API.
All this information is considered privileged since it belongs to the manufacturer or original listing creator on Amazon.
SellerChamp actually uses a 3rd-party service to acquire this information. The 3rd-party service can only fetch publicly displayed photos from Amazon and that too sometimes can be delayed.
This is why you'll see so few companies that offer this data service as Amazon has very tight restrictions on it.