A Little Vent

So yesterday while I was at Farm Fresh getting Cj's medicine I needed to get my Prisolec.. So I asked them how much their 42 count box was.. Thinking they were a couple dollars more then Walmart but it was easier to just get them there.. They were $37 I told the lady NO THANK YOU! I would go to Walmart tomorrow. They cost $23 to $24 at Walmart... How can one place charge $13 more then another! I was a little bit mad! GRRR