Popcorn and cinemas go together intrinsically.

While the price of cinema tickets may vary from cinema to cinema and from film to film, popcorn's a constant throughout. Or is it? We surveyed fifteen cinemas across Ireland, from Bundoran, Co. Donegal to Galway City and parts between, to find out how much a regular-sized bag of popcorn costs.

We anonymously called eighteen cinemas across the country - two didn't answer, one wouldn't give out the information over the phone - and the results were surprising to say the least.

All calculated, the average price across the cinemas we surveyed is €4.37. However, the prices vary hugely depending on location. Not only that, the individual size of each popcorn bag wasn't investigated. We simply called each cinema, asked them how much a regular / medium-sized bag of popcorn was and noted the price.

In all cases, each cinema pointed out that it was cheaper to buy the popcorn with a drink or with a larger size.

The most expensive bag of popcorn in our survey was tied between Cineworld on Parnell St. and Odeon Cinema - both of which were €5.90. The second most expensive bag of popcorn in our survey was Showtime Cinemas on the Ennis Road in Limerick, which cost €5.80. Next on the list was Movies At Dundrum and Movies At Swords, both of which charged €5.75.

On the opposite end of the spectrum, the cheapest bag of regular-sized popcorn in the country is at Century Cinemas in Letterkenny, which charged €1.95 for a regular-sized bag of popcorn. Eclipse Cinemas in Bundoran was the next cheapest, which charged €3.00 whilst Eclipse Cinemas in Lifford charged 20c extra.

Savoy Cinema on O'Connell St., Dublin charges €4.50 whilst Omniplex Rathmines charges €4.80. IMC Santry, meanwhile, charges €4.50 whilst Lighthouse Cinemas in Smithfield charges €5.00.

Here's a full breakdown, starting from the cheapest to the most expensive.

- Century Cinemas, Donegal: €1.95

- Eclipse, Bundoran: €3.00

- Eclipse, Lifford: €3.20

- The Reel Picture, Cork: €3.30

- Eye Cinema, Galway: €3.80

- C&L Plex, Roscommon: €3.80

- Carrick Cineplex, Roscommon: €3.80

- Gate Cinema, Cork: €4.00

- IMC Santry, Dublin: €4.50

- Omniplex Rathmines, Dublin: €4.80

- Lighthouse Cinema, Dublin: €5.00

- Movies At Dundrum / Swords: €5.75

- Showtime Cinemas, Limerick: €5.80

- Odeon Portaloise: €5.90

- Cineworld, Dublin: €5.90

Any thoughts on the results? What's the price in your local cinema? Let us know in the comments!