Simple guide to use Middleman Service for your Sales and Purchases... [Simple Guide] Playerup Middleman Service - New Members Read This! - UPDATED | PlayerUp Accounts Marketplace. Player 2 Player Secure Platform. If you are the seller... Getting Started: How Do I Sell / List Items For Sale? | PlayerUp Accounts Marketplace. Player 2 Player Secure Platform. Middleman: Sellers Guide | PlayerUp Accounts Marketplace. Player 2 Player Secure Platform. It usually takes 1-72hrs before the actual transaction starts after the identification/documents have been submitted for the buyer's verification.