This solution may suffice in the short term - indeed it’s the only solution available at the moment. But it has two major problems:
- It’s not at all connected to sales tax. Per CO Dept of Revenue, the fee is applicable on "…all deliveries by motor vehicle to a location in Colorado with at least one item of tangible personal property subject to state sales or use tax." (emphasis added) This means that a sales tax-exempt customer should not pay this fee, and puts the merchant at risk if they collect the fee erroneously.
- Unless you offer Free Shipping, it does not split the Retail Delivery Fee into its own, separate line item, which is spelled out as a requirement in the law. The best you can do is say “Standard Shipping (includes $0.27 Retail Delivery Fee)…$5.27”