Change the default selection for 'Price' to the first item in the dropdown list. Same for Currency type. Also, the 'Price: $ ___ to ___' selection would read better as 'Range: $ ____ to ___' since we already know it's price (right now it shows...
Add a quick-click column to 'add to your watched listings' without having to go inside the listing itself and click the 'watch' button. Could be in the form of a checkbox or something similar.
It is not possible to use use the same animation, because I didn't design the buttons. I'll try to simulate the same effect, but I'll have to study how they did it for the buttons first.