buy now option in trade market

Hello, I have been playing the game for a while now and it is an absolute blast. It is the only game I play right now but their are somethings that I want to ask. I was just wondering why we don't have a buy now option for trade. From what I can see it will make the trade market flow much faster, it will combat price fixing problems, and it will make the "I can't accept the offer because I'm in labs" problem disappear. If theirs a problem that I'm not seeing please at least tell me so i don't stay in the dark thank you.
Sincerely,
Hamad

Ah, price fixers. They're my kink. Does anyone know how many offers you can HAVE at one time? Is it the same as how many you can offer?
Also, is it against any TOS to submit 10 offers to the deetch that is price-fixing?
Asking for myself.