I have no idea how much to charge for gumpaste roses or other flowers to do a topper for a bride. How do you figure the charge for your gumpaste work or do you just figure it into a slice price?
Are you doing a "pouf" of flowers or just adding some roses to the top?
There is no one way to price this, but some guidelines are:
triple your base per slice charge for lots of gumpaste flowers
charge a flat per-stem charge--- $8-$12 per stem depending
charge a flat fee for the topper itself, which if it has a lot of flowers, could be $100-150
Whatever you do, don't underprice your expertise.
I charge $150 and up for a full topper with 3 different flowers and greenery. Cascades down the cake are $250 and up. Individual flowers are priced per job depending on the flowers. I keep the gumpaste charge separate from the per serving price.. so it'd be xxx amount of servings at $x.xx and then $xxx.xx for the topper and $xxx.xx for the cascade and so on.