Don’t get me wrong! Nothing is free. And I think your offer is generous considering that most machines are used inhouse and are thus not accessible for the artist or freelancer.
I did a lot of research the past two years and know the prices of the leading 3D printers and their consumables. I also talked to a lot of artists last year and made a survey regarding interest in a service like this and the price expectations. And that lead to my statement regarding the price and me not offering this service. The average price expectation for a plastic model was below 100$ for a 3x3x5 inch envelope… Hard to achieve imho.
Due to my findings I think it would be of great advantage for you to be pro active and produce some pricing instead of waiting for someone to submit a project for pricing. Show the community some sample projects you did and in which price range those projects are located.
I am sure you will receive more requests once you have posted some cool images of the samples you print. Also the size of the objects you can print would be of interest I guess.
Education about the process, the reason for the time it takes to print a model, and the requirements regarding the mesh geometry might wake more interest in your service as well.
Again, don’t get me wrong, I wish you the best business there is!
Best of luck!
Lemo