When: The games on Friday April 18th (7:10pm), Saturday April 19th (7:10pm) and Sunday April 20th (1:10pm).
The Mets host the Braves this weekend at Citi Field and in celebration of the 50th Anniversary of Shea Stadium, the prices are what they were in 1964. For $3.50 get a ticket in the Promenade Outfield and for $19.64 sit in a baseline box seat.
With service charges and all, the $3.50 tickets are actually $10.25 for one ticket and the $19.64 tickets are actually $28.14 for one ticket (which is still pretty amazing). You can reserve tickets here.