yes, i bought two computer help books at borders,books and music and called them the next day to see if i could return one. luckily they said yes. i paid by check but they gave me my money back. i would have hated to wait up to 10 days to return it due to paying by ck because i'd always feel they would have figured i'd copied the book and wanted it "for free".
believe me, some people do that!!
the store should have just given you store credit.