diff --git a/lib/e_pochta_sms.rb b/lib/e_pochta_sms.rb
index fc264de..a5c3b04 100644
--- a/lib/e_pochta_sms.rb
+++ b/lib/e_pochta_sms.rb
@@ -15,6 +15,32 @@ def create_address_book(params)
 			end
 		end
 
+		def check_campaign_price(params)
+			params['action'] = 'checkCampaignPrice'
+			
+			result = exec_command(params)
+			result = JSON.parse(result.body)
+
+			if result.has_key? 'error'			
+				false
+			else
+				result['result']
+			end
+		end
+
+		def get_addressbook(params)
+			params['action'] = 'getAddressbook'
+			
+			result = exec_command(params)
+			result = JSON.parse(result.body)
+
+			if result.has_key? 'error'			
+				false
+			else
+				result['result']
+			end
+		end
+
 		def get_balance()
 			params = {}
 			params['action'] 	 = 'getUserBalance'