Suggestion

[iDevid]

Increment by 10 or 100 the numeric input thanks to step="value"

[Slimmmo]

How were you thinking you would swap between +1, +10 etc? Would there be a different amount for each business or would it be like in game where you can toggle all of them between +1, +10 etc?

[iDevid]

Like in game :D

[61352151511]

I was thinking if possible have it increase by 10 when shift is held and the up arrow clicked and 100 for ctrl

[ricardopetrere]

I liked this idea too, so I've coded it to see how it looks hahaha
@iDevid , I made it the way you suggested, as it is in-game (I don't know how to intercept the Shift+Click/Ctrl+Click for the number field to actually increment/decrement, it must be raising another internal event)
It's on http://ricardopetrere.github.io/Slimmmo.github.io/, at the right side.