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.
The cost of braces varies, but you can expect the cost for conventional metal braces to average $5,000 (or less in rural areas). Some insurance carriers provide partial coverage for orthodontic treatment, so check with your insurance provider for the specifics of what your policy covers. WebMD Medical Reference.