With the above example you will get price information on the first 12 items in category
starting with the letter
It should be noted that after alpha=, more than one letter may be used to narrow the search further.
The first name/value pair of the JSON object returned is the total number of items in category 1 starting with a. It this case "total":14 and as the maximum number of items per page is 12 we know that we will have 12 items on this page with 2 items on the next
The next name/value pair of the JSON object is an array of items with their price change information.