Singleton | Quantity Price , 3 reviews
Works very well - I had to enter in the relevant css class names in the Advanced Settings, but after doing that it works perfectly!
Simply save your time and energy and hire a developer to code this feature into your store. This app does not work even after managing to speak with support, and you'd be lucky to get a response.
Functionality is not working.
Support is too long (1-3 days) (waste of time to get support)
When the trial ended, the developer tried to implement flex price manually, but then replied that he can't.
But this is not such a problem, because implementation of the quantity field and price is almost the same as in the standard themes. Do not recommend.