I'm working on an effort to create a set of filters for search results.
One of the UX issues I'm currently working out is whether or not to place an "All" option as an item in the filters.
Filter by price
[ x ] All [ ] $1 - $10 [ ] $10 - $20 [ ] $20 - $30 [ ] $30 - $40
[ ] $1 - $10 [ ] $10 - $20 [ ] $20 - $30 [ ] $30 - $40
Is it understood that when no filters are selected, the user is looking at "all" or does this need to be made clear with the selection?
Any thoughts and examples would be appreciated.