Installing it is completely free. Depending on what you chose, you pay for each export:

All of your products should be exported
+$20.00 for up to 100 goods
+$50.00 for up to 1,000 goods
+$100.00 for up to 5,000 goods
All of your Collections are worth $10.00, and all of your Pages are worth $5.00.
+$5.00 to export all of your blogs and blog posts
+$5.00 to export your Active Theme
+$20.00 if you export all of your customers
+$20.00 if you export all of your orders
+$20.00 if you export all of your redirects
Include Metafields and SEO fields for Products +$20.00
There are no ongoing expenses because this is a one-time payment.

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