Hi, Minimum budget for integrating payment gateway is $99, rest of thing will depend on your list of specifications.
I’m very well versed with Custom themes, plugin development & Customization.
Relevant Skills and Experience
I Rank in world's top 400 freelancers.
I've skills and proven record in PHP (Laravel, Yii, Codeignitter), CMS (Wordpress,Joomla, Opencart, Magento ) , Plugin development & API integration!
Proposed Milestones
$100 CAD - After detail discussion, I will prepare final budget, timeline & milestones.