I've seen those. It's not finished in any way, it's just a cut profile. You have to grind the edge profiles before you get send it out to get heat treated. After heat treating, you'll have to finish the edge profile and complete the surface finishing on the entire tool. Then you'll have to decide if you want to just cord wrap it or put hard handle material on it. It'll sharpen up to a fine edge, it's just not the best edge holding steel. It works good for that type of tool.
Those blanks are for do-it-yourself projects. If you're going to pay someone to do all the work, it's not really going to be cheaper than buying one already made.