Hello,
we have good experience with Shopify. Please send me a message to establish the contact with me to discuss more and conclude the action plan.
We can conclude the final time/cost estimate after discussing.
Thanks,
Sathies
Note:
+ We are flexible for custom changes & we make them instantly.
+ We provide continuous support even after the project is over.
+ Please check my profile and portfolio in http://www.freelancer.com/u/graphicaa.html