Create a Pokémon-themed marketplace website

The website should be similar to [login to view URL] so take a look at it. It's a marketplace where users can buy and sell items (which are unique, so once sold, they cannot be bought by anyone else). Basic functionality: •Users should be able to add and payout funds via PayPal (new payment services should be easy to add later). •Items itself are created by a bot but are still associated with user accounts, so connection with an external bot should be easily possible Site Layout and Content: One Main Page with: • Header • Sidebar • Content-page: grid-view of products/items which can be sorted/searched All information about an item is shown directly in the grid-view, so NO dedicated product-page is needed User Page • Contact Info • List of Items: • Listed • Sold • Bought • Some other basic Stuff Help Page Shows process of how to add/pay out funds, buy/sell Items etc. Optional: Page for item with stats about it Site does NOT need: • Seller profile • Any kind of shops • Dedicated product page I would prefer the site to run on WordPress or any CMS you think would fit best. I would also like some advice about which CMS to run and with which plugins/extensions. If it is easier/cheaper it would be fine to use an existing premium theme and modify it for my needs. All these things can be further discussed.