Ecwid will seamlessly integrate with your existing vBulletin site — there’s no need to create a store from scratch or deal with mounds of code. Sell your inventory from as many websites as you’d like; your Ecwid-powered vBulletin shopping cart can be managed conveniently from one location. Below is a simple step by step on adding e-commerce to your vBulletin site site.
You can add your Ecwid store to a vBulletin site with the help of Ecwid integration codes (Ecwid widgets). You can get the codes for your store on “Create your online store” step in Ecwid Onboarding Wizard or from this article: Ecwid Widgets.
To add HTML widget for Ecwid store to your vBulletin site page find Static HTML module in the editor menu and drag it to the area on the page where you want the store to appear:
Click on the module pencil icon:
Add Ecwid Product browser code to the module HTML text field and save the changes:
The store will appear on the site after you save and publish the page.
You can change the store layout by modifying Ecwid product browser code. Please check this page for detailed instructions: How to change the store layout