Up until now, there has been no viable alternative.
We have recently been experimenting with heat meters, to see whether the possibility of charging via their readings is viable.
While many books are also on the market, a good DVD is a viable substitute for a yoga instructor if you don't live near enough to a yoga studio, no one nearby teaches the style you're interested in, or you can't afford the yoga classes.
Often when a person cannot afford to purchase a new camera, buying a refurbished one is a viable option.Another benefit associated with refurbished cameras is that Canon has a great reputation for producing high quality products.
Due to full-time jobs, family obligations, inflexible schedules or other constraints, on-site degrees aren't viable options for such students, so it's natural to look into online opportunities that allow more personalized study programs.