After talking with a few other people, Im starting to see a pattern in the tavern on Tuesdays. This thread is not for complaints about the tavern, or posts about how to change it etc. I am simply asking for people to share approximately how many spirits they get per credits spent and how many purple/goldheroes they obtain per credits spent. ALso since I do believe things may be different on different servers, please post what server you are on as well.

On server 1
I and a couple others were able to obtain 1 spirit for about every 20k credits I spent
for every 20m credits spent I received a purple or gold card
I had a ratio of 2 purples flipped for every 1 gold I flipped

I did not use VIP extra flips