As ebay doesn't provide this feature, I am trying to map user's searches in ebay's websites to findItemAdvanced searches. As normally when you select a conditon in the website, the URL will have the query 'LH_ItemCondition' with values like '3000|2750', I was just splitting using the '|' to get the values for the filter. These values are valid condition IDs as listed in: https://developer.ebay.com/DevZone/finding/CallRef/Enums/conditionIdList.html
The problem is that in websites like ebay.ie and ebay.fr, in searches like this one the condition ID in the URL is '4'. Of course this is not accepted by the API, so what I want to know is how to map these <1000 IDs to value condition IDs.