Hi Ange, for transparency, I am a self-employed digital marketer, but I’m here to give impartial advice.
Where are you wanting to sell your product, NZ or INTL?
Have you considered making your own website on WIX or Squarespace?
Would you need a full e-commerce store to sell online, or are you just wanting to showcase your products?
Put together a brief on what you need, and ask a few different agencies or website builder to quote you for the job.
Hope this helps,