"Buy one beer for the price of two, and get the second beer free” is a jocular bar saying that has been printed on several images. “Buy one for the price of two and get one free!” was posted in the newsgroup alt.2eggs.sausage.beans.tomatoes.2toast.largetea.cheerslove on November 17, 1999.

“Buy one for the price of two and get the second one free!” was posted on Twitter by Brooke on March 22, 2009. “Buy 1 beer 4 the price of 2 and get the second 4 free!” was posted on Twitter by Roger Bloem on February 22, 2012.


Google Groups: alt.2eggs.sausage.beans.tomatoes.2toast.largetea.cheerslove
New Web Site Idea
LCurry8690
11/17/99
(...)
It’s a bit like a fruiterer near where I used to live - he had a sign up outside his shop which said “Buy one for the price of two and get one free!” It got people coming into his shop if nothing else! 

19 November 2006, Providence (RI) Journal, “Business notes” by John Kostrzewa, pg. ?:
“Special—Buy 1 small sandwich for the price of two. You get the second sandwich absolutely free.” A customer stopped in last week and asked if he could get the “special” if he wanted two larges.

Twitter
// Brooke //
@brookeannealva
Buy one for the price of two and get the second one free!
12:51 PM - 22 Mar 2009

Twitter
Brandi Love ®
@brandi_love
Buy one for the price of two and get the second one free!
8:15 AM - 30 Mar 2009

Twitter
Adele Louise 🌼
@adelelouised
Ha ha seen a sign saying buy one bag of fish and chips for the price of two and get the second bag for free lol you get? @AdamLHolland94
10:27 AM - 28 Jul 2011

Twitter
Oscar, one man fail compilation
@o_romero27
“But 1 beer 4 the price of 2 and get the seccond one for free!” TROLOLOLOL
4:12 PM - 22 Feb 2012

Twitter
Roger Bloem 🍔 🍟
@RogerBloem
Hahaha! Buy 1 beer 4 the price of 2 and get the second 4 free! http://yfrog.com/oehmerwj
5:06 PM - 22 Feb 2012

Twitter
Alejandro.
@AlejoSocorro
Buy 1 beer, 4 the price of 2 and get the second beer 4 free!
12:53 AM - 23 Feb 2012

Google Books
Market Like You Mean It:
Engage Customers, Create Brand Believers, and Gain Fans for Everything You Sell
By Al Lautenslager
Entrepreneur Press
2014
Pg. 68:
Buy 1 Beer for the Price of 2 and Get the Second One Free

Facebook
El Mariachi Mexican Restaurant
January 4, 2014 ·
Buy one Margarita for the price of two, and get the second one Free ..!

Facebook
Wellsburger
January 8, 2015 · Wellsburg, IA ·
Buy any burger for the price of two and get the second one free!

21 May 2015, Townsville (Queensland) Bulletin, “PM, here’s a fine idea for you to pay” by Steve Price, pg. 2:
Oops, I nearly forgot Halifax, where there’s a sign on the pub, ‘’Buy One Beer For The Price Of Two, And Get The Second For Free!”

Twitter
DesperadosTacos
@DesperadosTacos
Buy 1 margarita 4 the price of 2 and get the second margarita FREE!
2:31 PM - 15 May 2018

British Comedy Guide
Published: Saturday 26th May 2018
(...)
Buy One Meal… (Series 1, Episode 4)
“Buy one meal for the price of two… get the second meal absolutely free.” (On a sign.—ed.)
Here’s hoping that their food is better than their maths skills.

Twitter
Bars Society
@BarsSociety
THE BERNIE SANDERS HAPPY HOUR SPECIAL…
Buy One Drink for the Price of Two and Get the Second Drink Absolutely FREE!!! 🍺🍺
12:03 PM - 4 Mar 2019