I need on line business selling 100-300 items. I would like to sell on eBay and have a website for on line sales

I want to start selling Victrix 28mm miniatures. There are approximately 80 different items (bags of historic miniatures) covering different ancient armies. I plan to sell the bags, (80 items), but I also want to sell painted sets of each bag, and individual sprues (basically 8-10 models from a larger bag). I would like to use PayPal for commerce. For further information on these miniatures and to see the Victrix Website, Victrixltd.com.