Balloon arches are priced by height, width, style and the actual balloons chosen. It is important to consider how the arch will be used, such as a walk through or drive through arch. Arches can be a string of pearl which is one balloon after another on a single line, or packed which is made of 4 balloon clusters wrapped on a single line if using helium. Packed arches can also be air filled and created using base plates, poles and flexible arch rod. We rarely install helium arches outdoors due to the unknown factors of wind and weather. A single string of pearl entry arch approximately 10′ x 10′ is about $110. A similar sized free standing packed arch suitable indoors would be approximately $375.