Anywhere from $75 for on sale stuff up to the normally priced good shoes at $170. Last time I went, it was $410 for two pairs of shoes and five pairs of socks.
Depends on what you want in a running shoe, but I'd suspect you'd be in for $100 - $120. I'd suggest going in, seeing what they have, and speaking with their excellent staff who is very friendly and helpful and they'll be able to get you in the right shoe.
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