Amazon Product Listing

Amazon Merchant. To copy existing listing for 'art print's which Ive already added and amend the details for the new 'art print'. Most of the fields are already completed from the existing listings. The only changes are to: upload 2 new images, amend the title (from meta in image), add keywords and add a new AEN barcode from a spreadsheet of numbers. Each new listing from an existing copied listing takes me around 3 minutes each including upload of 2 product images. I currently have a further 200 ready to go and could have another 1000+ if this works out. I currently do not have a data sheet as I am no longer a Pro merchant. However, I would be prepared to look at this again if the ROI warrants it. I would also be interested in using the same catalogue of print products with other online stores - a conversion would need to be made for each additional store. I would ask you to hold the latest catalogue and continue to update and push out latest products as and when they become available.