The JET approval process can take anywhere from a few hours to a few months. If the products you sell are already on JET, you could be approved almost immediately. However, if your products are not yet on JET, but you have submitted a well prepared feed and your products have valid ASINs (an ASIN is preferred by the JET team over UPC or EAN), you probably will wait about 4 weeks while the JET team is creating pages for your products. Unfortunately, we also see merchants waiting up to 4 months to be approved. There is no guaranteed time frame, but this is what we have observed thus far.