Hey @carn I do both fulfillment by Amazon and fulfillment by merchant. Amazon usually takes around $4 for selling fees and if you do FBA it's around another $4 for the pick and pack service. The scanner software I personally use is FBAScan but there are a lot of people that like the new kid on the block which is ScoutIQ. There are a few reasons I like FBAScan over ScoutIQ including the fact that it is cheaper. If it piques your interest, I wrote an article comparing the three best selling methods for beginners including bookselling. Hit me up if you have any more questions. The article is here. Have a good one!