The stats are heavily influenced by my personal rolls while testing out and playing around with things. It was on a 1.0% house edge then.

Regarding how the random house edge is applied, the base chance is calculated first. Example, betting on a multiplier of 2 gives you a base chance of 50%. A random float number generator generates a number between 0.00-1.00 is generated and multiplied to the house edge of 1%. This gives a purely random house edge between 0.01% and 1.00% every single time you hit the bet button. This random house edge is then multiplied by the base chance, and subtracted from the base chance to give you the final winning chance. For a bet with a multiplier of 2, it is a random chance of 49.50% to 49.99%. Hope this clears up any uncertainties.

So in summary, every bet regardless of the wager has a random house edge between 0.01% to 1.0%