Virtual Assistant for E-Commerce firm

My firm is looking for an experienced Virtual Assistant. We are willing to pay 200$ per month for 10 hours of work per week, and would be happy to increase the number of hours to 40+ if the relationship works out. Skills include: managing Amazon accounts, supply chain logistics (contacting suppliers, making sure shipments are on time, paying customs fees), basic book keeping etc. Applicants should be highly organized and have perfect English skills.