To change the price of any item, or to change the name of any item, or even to change the description of any item, heres how.
Point your browser to http://backend.bingomenow.com to access your backend. Proceed to Edit > Menus > Menu to access your main menu.
Find the item you want to change and click the gear icon.
The options panel will be displayed, where you can fill in the information.
Once your done with the changes, click the green check mark and then save on the top bar. Changes will be applied immediately on the live App. To review changes you must refresh app screen.