Conversion rates in the retail industry are often very low, in the low single digits or less. Also, they tend to be lower on mobile devices. If your conversion rate is 1%, you need 3,000 visits for 30 conversions. However, there are many variables, such as the quality of your traffic (people looking for generic shoes or specific brands will probably not convert), the platform they are using (mobile vs desktop), the quality of your site and the efficiency in which your site encourages a visitor to become a customer.
To boost conversion rates and increase sales, you may want to install PollCart (a Shopify plugin), which helps capture sales from undecided customers and lets your customers spread the word about your store and products. This type of organic viral marketing and community building may be perfect for Shrewdhippo, which has fashionable and artistic products that lend themselves to sharing. You can learn about it here (https://apps.shopify.com/pollcart-social-commerce).
I hope this helps. Let me know if there is anything more I can do.
p.s. Here are a couple of recent articles on conversion rates. I can't vouch for their accuracy, although Moz knows what its doing. However, they are in line with other research I've seen on the issue.
Conversions in retail tend to be rather low, often in the low single digits or less. Do you have any history you can use to calculate? If you expect a conversion rate of 1%, you will need 3,000 visits. There are a lot of variables, such as (i) the quality of traffic (low quality traffic is unlikely to convert at any rate), (ii) computer platform (mobile converts less than desktop), and (iii) the quality of your site and the efficiency of your sales funnel (driving visitors through purchase checkout). Many good sites will convert between 1% to 5%, and many of those have strong reputations and effective websites. Many sites, such as newer sites or sites that are not optimized, will convert at less than 1%.
To increase conversions and generate good traffic, you may want to install PollCart (a Shopify plugin), which helps capture sales from undecided customers and lets your customers spread the word about your store and your products and services. Shrewdhippo's fashionable and artistic products would really lend themselves to sharing!
I hope this helps. Let me know if there is anything further I can help with.
p.s. Here are a couple of recent articles showing the type of results I mentioned. Moz is usually really good at this type of analysis.