I'm trying to develop an algorithm to return the cheapest price (including shipping) so I can list my used products competitively. I don't have the time to manually upload all my stock and determine prices by looking through the listings.
At the moment I'm connecting to the Amazon Product API. It's possible with this service to return the lowest used price. However, this doesn't take shipping into consideration and there is always someone listing their item at £0.01 with sky high p&p, so the minimum price returned is misleading.
I notice other sellers seem to consistently be the best priced while having too much stock to do it manually. Is this data available through an API or other methods please?