A custom-built PC is assembled to cater to a specific user's needs. Internationally, there are many e-stores available for users which offer them to build and order their systems as per their needs. In, 2020, Pakistan observed a covid-19 lockdown, and most international shipments are canceled due to the pandemic. This real-world situation highlighted the deficiency of the local market to fulfill the demands of custom-built PC users. In this paper, we propose and design a generic architecture of an e-store (Nice PC Maker (NPM)) to facilitate users with custom-built PC options along with other added features such as pre-build system purchasing and PC components purchasing. WooCommerce product builders (WordPress) are used to implement the architectural design. We also configured this generic architecture for a local client which helps them to increase their business and facilitates users to get their desired systems.