Only 1 coupon can be redeemed, 1 time. Each spin or shot can cost anywhere from a single cent to several dollars.
https://ufr-2020.front5.picapo.net/forums/viewtopic.php?pid=455993
https://talkingpoints.org/subx/showthread.php?tid=87003
http://www.lada-xray.net/showthread.php?p=280073#post280073
http://horsecity.ru/phpBB3/viewtopic.php?f=5&t=502260
https://muchroom.ng/index.php?topic=78238.new#new
https://www.ww2.site/forum/viewtopic.php?p=190500#p190500
http://oldsite.giessen46ers.de/fantalk/viewtopic.php?f=1&t=197974
http://1.s.2.free.fr/viewtopic.php?f=2&t=608171
http://60.250.226.63/ipkb/viewtopic.php?f=41&t=1969028
https://wietmarkt.nl/viewtopic.php?t=605277
http://mirosovak.edoras.cz/viewtopic.php?f=3&t=491727
http://eporady.starostwo.ketrzyn.pl/viewtopic.php?f=7&t=87803