This question come up about once a month on the forums. The short answer is more than you were probably thinking, the long answer is: Minimum of $25/hour of work, probably more like 30-50 depending on who's doing it. Your request for better doesn't give a whole lot to go on, so I'll break time estimates down into 3 broad categories of sheet complexity assuming a moderately complex game system (definitely not more complex than 5e): Basic (20 - 40 hrs): this is an html sheet with a minimum of css styling to make it look pretty and probably close to no automation Some automation (30-80 hrs): this sheet has some nice styling to make it look good and fun to use. It's got a decent amount of JavaScript automation under the hood, but just enough to make everything calculate quickly Advanced (60 - 100s hrs): This is on the order of the Starfinder by Roll20 sheet, shaped sheet for 5e, or 5e by Roll20 (etc, there's a lot of current sheets in this category). It's got extensive styling to make the most use of screen realestate and make it very pleasing to use. Under the hood there's extensive automation to handle a wide variety of play situations. This sheet doesn't have an upper end on it's development time because there's a ton of possibilities here. These time estimates are conservative and don't include time to understand the game system or support after development is done. They're also based on doing the sheet from scratch. Doing a rebuild of a sheet or adaptation of a sheet might be shorter, but I'd probably expect it to be longer.