Villa signed Hourihane from Barnsley for around £1 million just over a year ago, and the central-midfielder is starting to hit his top form now.
The Republic of Ireland international has established himself as a permanent starter in Steve Bruce’s side’s midfield, and the goals have been flowing of late.
Hourihane has hit the back of the net nine times this season, including four times his last nine appearances.
And Bruce believes that the 27-year-old has proven to be a bargain addition for his side: “For £1 million or whatever we paid for him, he's been fantastic value.
“He enjoys playing football, training and all aspects of it.
"When he gets in and around the 18-yard box, he's a wonderful finisher.
“He practices every day and is usually the last person out on the training ground doing extras.
“To get the amount of goals and assists he has, he can be very pleased. Let's hope he continues.”
Hourihane looks set to play a major role for Villa over the remainder of the campaign.
The claret and blues are pushing hard for automatic promotion, with Bruce’s side currently in third place in the Championship table.