Very fun game loop! I loved how you could chain the explosives. I wished the spinning felt better but I was on the edge of my seat either way each time I spun it xD. The music was suprisingly on point abiet a bit monotonous.
After a couple tries I found that the incentive to buy more expensive items outweighs buying a lot of smaller items, making the optimal way to play is shop rng for better items.
I hope you don't mind me suggesting things. I think you could add a grid where you slot in items after purchasing. Or you could make a purchase that increases the chance to get better items.