Zappos.com offers free shipping on domestic (USA, sorry that won't help you Arual) purchases and returns. They carry a huge selection. Their prices are not fantastic IMO but you're not out any $$$ if the shoe doesn't fit.

That being said, I still prefer to try on my footwear at a B&M store. It's one of the most important pieces of gear you can buy. Often if possible I'll try on two or more pairs of the same shoe in the same size....and they fit differently. I'll take a chance online only if it's a shoe I can't find locally or it's discounted big $$$$.

Unfortunately the only true test of a shoe's suitability lies several miles and several hours down the trail.
_________________________
If you only travel on sunny days you will never reach your destination.*

* May not apply at certain latitudes in Canada and elsewhere.