Bernard Antwi Adabankah uses a decision tree to model price changes:
The sample included N = 262 individual orders for Interlocking Hearts Design Cake Knife/Server set with OrderItemSKU as 2401 from the period ranging from 1st March 2014 to 20th April 2016 with an ecommerce company which sells on Amazon.co.uk
The Profit response variable is measured as the product sale price on amazon.co.uk which includes amazon.co.uk commission and any applicable postage costs less the purchase price of the Hearts Design Cake Knife/Server set from the supplier.
Read the comments for a couple good critiques of the article.