I have got 2 pairs of my prescription glasses broken, one for $200, and the other for $320, I bouht them at my local glasses store, it seems that they can be destroyed very easily, so what kinds of eyeglasses frames and lenses are the most durable ones? Where can I get these transition prescription glasses?

I think beandable titanium eyeglass frame will be suitable for you. Bendable titanium eyeglass frames are unbreakable, they will remain the original shape even after you bend them hard. Also they are very light and durable.
www.cheapglasses123.com provides transition lenses with a competitive price.