diff --git a/cas.go b/cas.go
index c1f02ea..1dde934 100644
--- a/cas.go
+++ b/cas.go
@@ -31,12 +31,12 @@ func listItems(e *Envelope) {
 		Prices: Prices{
 			ItemId: 0,
 			Price: Price{
-				Amount:   100,
+				// Not sure about WSC, but must match the price for the title you are purchasing in Wii no Ma.
+				Amount:   0,
 				Currency: "POINTS",
 			},
-			// Literally every Limit except for PR works
-			Limits:      LimitStruct(TR),
-			LicenseKind: "RENTAL",
+			Limits:      LimitStruct(DR),
+			LicenseKind: RENTAL,
 		},
 	})
 }
diff --git a/constants.go b/constants.go
index f814d37..b90e8c2 100644
--- a/constants.go
+++ b/constants.go
@@ -13,6 +13,18 @@ const (
 	AT            = 10000
 )
 
+// LicenceKinds represents the various rights a user has to a title.
+type LicenceKinds string
+
+const (
+	PERMANENT LicenceKinds = "PERMANENT"
+	DEMO      LicenceKinds = "DEMO"
+	TRIAL     LicenceKinds = "TRIAL"
+	RENTAL    LicenceKinds = "RENTAL"
+	SUBSCRIPT LicenceKinds = "SUBSCRIPT"
+	SERVICE   LicenceKinds = "SERVICE"
+)
+
 // LimitStruct returns a Limits struct filled for the given kind.
 func LimitStruct(kind LimitKinds) Limits {
 	names := map[LimitKinds]string{
diff --git a/structure.go b/structure.go
index bd7a023..5c49266 100644
--- a/structure.go
+++ b/structure.go
@@ -104,7 +104,7 @@ type Balance struct {
 // Limits represents a common XML structure for transaction information.
 type Limits struct {
 	XMLName   xml.Name   `xml:"Limits"`
-	Limits    LimitKinds `xml:"Limits,omitempty"`
+	Limits    LimitKinds `xml:"Limits"`
 	LimitKind string     `xml:"LimitKind,omitempty"`
 }
 
@@ -161,8 +161,8 @@ type Price struct {
 type Prices struct {
 	ItemId      int `xml:"ItemId"`
 	Price       Price
-	Limits      Limits `xml:"Limits"`
-	LicenseKind string `xml:"LicenseKind"`
+	Limits      Limits       `xml:"Limits"`
+	LicenseKind LicenceKinds `xml:"LicenseKind"`
 }
 
 // Items allows specifying an overview of a title's contents.
@@ -181,4 +181,5 @@ type Ratings struct {
 	Name    string   `xml:"Name"`
 	Rating  int      `xml:"Rating"`
 	Age     int      `xml:"Age"`
+	// There is also a `Descriptors` field
 }
diff --git a/utils.go b/utils.go
index 96f2e42..a3fc945 100644
--- a/utils.go
+++ b/utils.go
@@ -35,7 +35,7 @@ import (
 var namespaceParse = regexp.MustCompile(`^urn:(.{3})\.wsapi\.broadon\.com/(.*)$`)
 
 // parseAction interprets contents along the lines of "urn:ecs.wsapi.broadon.com/CheckDeviceStatus",
-//where "CheckDeviceStatus" is the action to be performed.
+// where "CheckDeviceStatus" is the action to be performed.
 func parseAction(original string) (string, string) {
 	// Intended to return the original string, the service's name and the name of the action.
 	matches := namespaceParse.FindStringSubmatch(original)