Hi!
I reduced the volume from 45 to 32 cm3 and the cost remains the same (EDITED: well, not the same, but this item does not qualify for a discount, see below)
(in) 2.524w x 3.396d x 2.772h
(cm) 6.412w x 8.626d x 7.042h
Volume 32.3288cm3
Density 8.30%
The model is this
Doghouse 01 Large - 1:12 scale
I guess this has to do with the relation between bounding box, density and cost as it says in
https://www.shapeways.com/materials/strong-and-flexible-plas tic
"... Details on pricing / Density discount
We also offer a volume and density discount on Strong & Flexible materials. For models that have greater than 10% density (material volume divided by bounding box volume), volume above the first 20cm3 is calculated with a 50% discount.
Bounding box pricing on big low density products
Large, extremely low density models printed in White Strong & Flexible are priced based on bounding box volume rather than material volume. For models with a bounding box over 10,000cm3 and a density less than or equal to 2.6%, the price is $.0385 per bounding box cm3 plus a base price of $1.50. See our blog post to learn more..."
According to this, since my model has a density less than 10% there is no discount.
Is there any way to reduce the cost?
I thought: Should I make the walls thicker? But with Volume = 56.9690cm3 and Density = 14.63% is worst