Paid job: 3d Modeling/printing

I’ve been asked by a family member to do the following:
they are asking for costing before send up the real items
They are all in imperial measurements – parts off a 1972 caravan.

1 x curved piece in white – 6” long x 1 ½”

2 x cogs in white – please note the cog arms curve ever so slightly around the shaft – not straight down it.

10 x window lock in light grey – consists of 3 pieces - first piece measures 1 5/8” x 1”

4 x door handles in gold? If gold isn’t available, then black as they will be gilded. 6”

PS: I could you my printer as long as I have the stl files