We started our 3D printing business with a more expensive/high quality machine because the diversity of uses for the end product is so much higher. The biggest challenge is to find customers, know your niche, and make sure you can demonstrate your validity. To do so we created our own website (with WIX), write articles about the uses of 3D printing and post customer success stories. The final big part is to make it easy for a customer to buy from you with an online ordering system, whether it is through a platform like shopify or Etsty, or thorugh yoor website. You can see what we have created over the past few years at our website at https://www.tempus3d.com/. Good luck with your business!