Really great concept and game.
Some quality of life improvement are still missing for me. Like auto-open all of your booster or t least ten at a time, one by one is just too long in the end game where you have hundreds of booster.
The auto-fill should put the best card in the best display too.
For putting boosters in display, need a x10 and a X100.
Need to improve the filling part, everytime I click to fill a case or to auto-fill, my game freeze for 30/45 seconds.
Combat must have better reward in lategame, no interest of playing for 20 $ when I sell for 100,000$ per day.
More information about card's effect could be great too, if the effect have true signification other than adding value.
In term of bugs, you have the skip button who sometimes do not work. And sometimes, when the day end, the pop windows don't scale well and you can't click any button to continue (must reload the page, thankfully the autosave works well(EDIT : press enter on the keyboard also pass it)
And for finish, it the "sweeten" menu, we can't see the whole list, the menu get cut in what I suppose to be "loyalty stamp".
But even with that, I spent a good time playing your game. Keep it goin' !