my husband had purchased the 576 walking sneaker about 2 yrs ago and was time for a new pair.  he walks almost everyday.  i looked on amazon to get a better price and was very happy to see a great savings for a great replacement model of 577.  the only store we could find that had it within driving distance the cost was $72 plus tax.  With amazon the total price was $56 and was free shipping.  Actually now he has upgraded to a 812 model walking sneaker which has more stability with a roll bar in the heel but the 577 he wears all day long as he is always on his feet and they hurt alot if not supported properly.  also he has bunions and other toe problems and needs this wider toe box.  both the 577 and 812 have been great for him and trust me, he is hard to fit.  also, he never had to "break them in" like other New Balance sneakers sold in department stores.  Comfort is very important for active people and the pricing is well worth it.  the 812 appear to be the same price as the store but we would at least save on the tax and would purchase them through amazon as well.