Build me a website as close to [login to view URL] as possible but with my own categories of my choice. needs to let users create accounts, create personal inventory of what they own from the categories I provide. Need the payment infrastructure the same as stock x where as users have to add a bank account or credit card that can be charged immediately if another user accepts their offer. please dont contact me if you are not familiar with [login to view URL] and the infrastructure. Thank you.