diff --git a/application/views/mobile_first/ah-gp-form.php b/application/views/mobile_first/ah-gp-form.php
index 9caca961..019708d0 100644
--- a/application/views/mobile_first/ah-gp-form.php
+++ b/application/views/mobile_first/ah-gp-form.php
@@ -356,6 +356,8 @@
    
    
     <button class="sendButton" id="submit_gp_form" type="button">Inquire Now</button>
+    <input name="total_price" id="totalPriceHidden" type="hidden" value="10000" />
+    <input name="payment_required" id="payment_required" type="hidden" value="required" />
     <input name="product_code" type="hidden" value="<?php echo $meta_product_code; ?>"/> 
     <input name="itinerary" type="hidden" value="<?php echo $information->ic_title; ?>" />
     </form>
@@ -399,6 +401,16 @@
 			var adultNumberValue = el('adultNumber').value;
 			const plusAdultBtn = el('plusAdult');
 			const minusAdultBtn = el('minusAdult');
+      const totalPriceHidden = el("totalPriceHidden");
+
+      function calcTotalPrice(ticketPrice, adultNumber) {
+          var totalPrice = ticketPrice * adultNumber;
+          if (adultNumber >= 10) {
+              totalPrice = totalPrice * 0.95;
+          }
+
+          return totalPrice.toFixed(2);
+      }
 			
 			plusAdultBtn.on('click', () => {
 				adultNumberValue++;
@@ -453,6 +465,9 @@
 			const gp_form = el('gp_form');
 			submitFormBtn.on('click', () => {
 				if (validateGPForm()) {
+          var ticketPrice = 300;
+					var totalPrice = calcTotalPrice(ticketPrice, adultNumberValue);
+          totalPriceHidden.value = totalPrice;
 					
 					if (typeof(grecaptcha) === "undefined") {
 						console.warn('grecaptcha is disabled.');