I visited other longarm sites, made a spreadsheet in excel. I changed my prices a couple of times in the first year, usually lowering the price here or there. Some longarmers do not charge for thread, or will charge 1 or 2 $ per bobbin. Price will also depend on what you use for thread, I usually use King Tut varigated, it is my fav
good luck
advice? don't stress, breathe and enjoy the process.