How to get product price through AliExpress API? - PHP

Have looked all over here and read through AliExpress's (not very thorough) API documentation to no avail. Anyone here know how I can get the price of a AliExpress item + image through their API? Currently attempting to use this AliExpress PHP set-up:

I feel there must be a simpler way as all I am looking for is the price and hopefully the image.