My name is Tira and I am a Shopify Guru here to help.
We have insurance coverage for USPS for up to $100 for four different types of shipments listed in our help document here, under “Insurance coverage”: Shipping carriers and insurance.
Since purchasing additional insurance is outside of our scope of support, and would involve the shipping company directly, you’ll need to contact USPS directly to inquire for more insurance coverage. You can also use their order form here.
I am also curious to see what the community can suggest for other alternatives!
This is what UPS says on it's website : "UPS's liability for loss or damage is limited, depending on the type of package and your location. If the value of your goods exceeds this amount, use Declared Value for Carriage to declare a higher value for your shipment up to the maximum allowed in your country or territory. The limits of declared value may vary according to the service chosen, and the origin and destination of the shipment. Select View Pricing for Value-Added Services for more information"
By using the Multi Carrier Shipping label app your shipments are automatically insured upto the limit and beyond that we populate the declared value that is the total worth of the goods and services. You just need to enable insurance as a special service in the app.
The information here is a bit outdated, and to avoid confusion with future viewers, I wanted to chime in to provide some insight on what we currently offer. If you are a store owner, shipping from the United States and are using Shopify Shipping, then you could be eligible for additional shipping insurance. Heres a quick overview:
If your order is eligible for additional shipping insurance, then you will be able to purchase additional shipping insurance when purchasing the shipping label. Our help document here dives into this feature further should you wish to learn more. If you are not using Shopify Shipping, or you are not shipping from the United States, then you would not be eligible to use shipping insurance. In this case, speaking with the courier directly will be your best approach to seeing whether or not you'll be able to purchase additional coverage.
I would need to look into the order to gain full context on why it would have allowed you to purchase the additional shipping insurance. I've gone ahead and emailed the email on your account; if you could reply there with the order number and your store URL, then I can have this reviewed.