Well it sounds like you've got all the answers you need then, are you starting a new business or product line based on these parts?I want to be able to produce them myself, not rely on anybody and be able to change sizes at will. Also have not to wait 10 day each time.
The skill needed to load some angle in and press a foot controller back and forth is not that skillful.
I picked up the 5 I had made at a local fab shop today, had a chat with the bloke and he said they are a pain to do due to him not having the correct angle lateral rollers. He said if he did have them it would just be a matter of pushing the pedals back and forth.
As for the postage I can send the same size /weight parcel for £10, so paying £50 on an order which works out a 1/3 of the price and makes each one go up in price by 1/3