Shopify Dropshipping Site Advertising Needed

I am seeking an experienced professional to devise and implement an advertising strategy for my Shopify dropshipping website. You will need to work out which social media platforms are best suited to us and define our target audience, since we haven't utilised any platforms yet, nor have we narrowed down our audience.

Job requirements:

- Define our target audience
- Determine suitable social media platforms
- Launch a cost-effective advertising campaign within a $100-$500 budget

Applicants should have experience with:

- Social media marketing
- Shopify and dropshipping
- Conducting market research
- Advertising within a budget

Kindly provide previous similar work examples when bidding.