E-Commerce Venture Digital Marketing Evaluation

I am currently evaluating digital marketing agencies for a new e-commerce venture that is in the pre-launch/early-stage phase. At this stage, I would like to understand your capabilities, approach and commercials without sharing detailed business/product information... (Budget: ₹12500 - ₹37500 INR, Jobs: Advertising, Content Marketing, Facebook Marketing, Google Ads, Internet Marketing, SEO, Social Media Marketing)