I agree that stainless steel is bad for coffee (glass-vacuum carafes are cheap and effective), but it usually takes awhile, an hour or more, before I notice a significant change in flavor from exposure to steel. On the rare occasion that I cannot avoid using a travel mug, I use this thermos tumbler.
Braces cost is around $4000-$6000. Braces cost $3,000-$10,000 depending on location and also on what kind of dentist does them, general dentist (cheaper) or orthodontist (more expensive). In European countries Braces usually cost about $5,000 nowadays.
How much do invisible braces cost? Invisible braces cost around $4,000 to $8,000, which is more than traditional metal braces (which can cost between $3,000 to $7,000). One of the reasons kids and teens dislike having to get braces is because of the way they look.