It makes me so happy to know that my tutorial was helpful 🙂 thank you so much for taking the time to comment <3

Hi Josh! Great question! It’s completely up to you on how specific you want to get. If you have a piece of 12×12 glass that you used in your project, and you used say – a 5×5 inch piece of it – you could get super detailed and divide the square inch by the total amount the sheet cost. This would give you a price per square in. OR if you’re like me and you’re a little more lax with your material pricing, you can simply use an average per square inch based on a typical price per a 12×12 sheet of glass. I do this and then charge more for artisan or one-of-a-kind glass. I’m actually working on a commission now where we discussed one price, but because the glass I ended up going with is far more expensive, the final price will go up. Just keep in mind it’s totally up to you. There’s no wrong way to do it 🙂