Hello Pink,
Greetings, We glad to support you on trasferring your site from Big Commerce to Shopify. We are Shopify experts and working on various projects. Please let us know when you want to get finish that job. We're ready to do your assigned task at lowest cost. Please communicate on our mail for referral links.
Thanks
Sudhir
bluetechasia(at)gmail(dot)com
Skype: sudhircj1