Step 1: Search for the item you want on Amazon UK, JP sites or Walmart.com
Step 2: Copy and paste the link of the product detail page here:
Step 3: Type your email address below:
Step 4: How long you want to watch this item ?
Watch duration in month(s):
Step 5: Click following button to create the watch job
You can always check and modify your current watch list here:
Result: You will receive an email ONLY if the price drops within the duration you specified.