Royal Palace Balloon Arch: my balloon decor artist has priced this at $300 per arch, or $250 with larger arch balloons/slightly less detail. $125 for just a column, no central arch, or $200 for 2 columns. This is assuming a 3 hour minimum for making a single arch. If less time is available or you want multiple arches in 3 hours she will have to hire extra help and the price will go up.