Bride wants square petit fours, each with a gerber daisy and ribbon on the bottom edge. I would probably make a sheet cake, ice the top, put a layer of fondant on the top to make it flat and then cover them in a liquid fondant.

What do you charge for petit-fours?

Are the gerbera daisies sugar or fresh? they are expensive here

How small are the petit fours-wrapping ribbon is very, very tedious

Have you made these before? They are a huge pain.

Minimum $2 each PLUS the cost of flowers

The flowers would be sugar (fondant)
I have done ribbon on cupcakes and it's a ridiculous way to waste time!

I've never done petit fours before. I thought rather than wrapping the entire piece (1-1/2") in fondant, just placing a top layer of fondant on the slab cake then cutting and then dipping each piece in melted fondant. I've seen this method in Peggy Porshens book.

I was thinking around the $2-$3 range.