Lightspeed Retail POS X‑Series

Vend's support is terrible. Most times, their response time is terrible, and their typical response is to simply repeat the problem back to you - "It's not a bug, it's a feature" kind of thing. For more than 4 months, our products have been getting duplicated in Shopify, and after many, many attempts to get it resolved, the only effort on Vend's part has been to delete the duplicates for us, though it's just a matter of time until they reappear.
The interface on Vend's side has a "Unpublish from Shopify" button. It doesn't actually do anything. If the product's already on Shopify, you still have to manually seek out the product on Shopify and manually delete it.
To update products that don't have pictures, you have to delete the product from Shopify, "unpublish" it from Vend, then republish it. This is the only time this button's useful.
I'm giving it 2 stars only because the interaction with Shopify is somewhat better than Airsquare (never again).

Great program, but missing key features for what I needed in my business. It is not easy to switch tax rates from invoice to invoice and the system only supports one currency. Other than these issues, Vend seems to be a great solution for inventory management and lots of other benefits, but did not meet my needs.