Merge text message price warning (#100)

Author: jakecosgrove

docs/pages/pricing/letters.md

@@ -10,7 +10,15 @@ permalink: /pricing/letters
 ---
 
 {% include components/inset-text.html
-  text='**Some letter prices will increase on Tuesday 1 April 2025.**'
+text='Royal Mail is increasing its rates.
+
+On 1 April 2025:
+
+- second class letters will go up by between 6 or 8 pence
+- first class letters will go up by 81 pence
+
+The exact difference for postage will depend on the number of pages in your letter.
+'
 %}
 
 The cost of sending a standard letter depends on the postage you choose and how many sheets of paper you need.

docs/pages/pricing/pricing.md

@@ -10,7 +10,7 @@ permalink: /pricing/
 ---
 
 {% include components/inset-text.html
-  text='**Some letter prices will increase on Tuesday 1 April 2025.**'
+  text='**Text message and letter prices will increase on 1 April 2025.**'
 %}
 
 It’s free to send NHS App messages and emails through NHS Notify.

docs/pages/pricing/text-messages.md

@@ -9,6 +9,10 @@ nav_order: 2
 permalink: /pricing/text-messages
 ---
 
+{% include components/inset-text.html
+  text='On 1 April 2025 the cost of sending a text message will go up to 2.33 pence (plus VAT).'
+%}
+
 It costs 2.27 pence (plus VAT) for each text message you send.
 
 You may pay more for each message if you: