Hey guys, when i use the new Sell API to create an offer on ebay sandbox, the duration is always 30 Days. I found no parameter to change this for example to GTC (good til canceled). gtc is a duration at old trading api only? i thought i better use the newer api, but not have such barriers? Is it right, that the user of our software have to pay for a new offer of the same product every 30 days?