I'm the owner of two online stores that offer similar products and I often need call center services to provide support to my clients or call and remind my regular customers that it's time for them to replace their old contact lenses and that a new pair is already waiting for them in the warehouse of my online store. I use ecommerce call center outsourcing for this, because it's cheaper than hiring workers, renting an office, buying the necessary equipment, making sure that the operators don't interfere with each other while answering calls .... In general, the cost of this service depends on several factors and I find outsourcing services more beneficial for me. If you want to find out what such company can offer to you, then you can discuss it with their manager and find out the exact cost of this service for you. This will allow you to make a more informed decision for you.