How to check the number of products on your Shopify shop?
Shopify is a complete commerce platform that lets you start, grow, and manage a business. Create and customize an online store. To estimate how much does migration cost to migrate from/to Shopify, you should know how many entities you have on Shopify. With three simple steps, you can check the number of entities on Shopify platform. Follow the detailed instructions below to perform it, let’s started!
Step 1: Access your Shopify Admin Panel
Then, add the type of entities you wish to know the total quantity such as products, orders etc., after the slash. For example, I want to count how many customers are in my store, I will access the link: https://mystore.myshopify.com/admin/customer 
Step 2: Add /count.json to the end of your link
Check number of customers: https://mystore.myshopify.com/admin/customers/count.json Check number of products: https://mystore.myshopify.com/admin/products/count.json You will see the total quantity of your customers / products on the top of that page. 
Step 3: Check the number of other items on Shopify
According to the same principle, you can check the number of orders very quickly as following: https://mystore.myshopify.com/admin/orders/count.json?status=any
Note: There are archived and non archived orders on Shopify. And if the archivation is on – all of them will be transferred as Archived to your target store.