[Plugin: Events Manager] Any way to delete decimal point and 2 zeros after from the ticket price?

You can change that using the template files at /templates/forms

http://wp-events-plugin.com/documentation/using-template-files/

First, follow the tutorials on how to copy template files to your current theme

Second, you need to edit/customize two php file e.g. ticket-single.php and ticket-list.php (which is self explanatory)

Third, this code $EM_Ticket->get_price(true); if true, will include currency symbol e.g. $ else if false, will just display the amount e.g. 5.00

Fourth, you can easily follow this url http://www.w3schools.com/php/func_string_money_format.asp for the PHP format. Just supply the code $EM_Ticket->get_price(true)