Here's my final working code. Thanks J - no thanks go to dave! :)
<cffunction name="GetCartTotal" access="public" returntype="numeric"
output="true" hint="Show total of cart in dollars">
<cfset var cartTotal = 0>
<cfloop collection="#VARIABLES.cart#" item="thismerchID">
<cfset cartTotal = cartTotal + VARIABLES.cart[thismerchID]["subtotal"]>
</cfloop>
<cfreturn cartTotal>
</cffunction>
Wilbergini
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