Buy an Android tablet for under $200 - maybe a Nexus 7.  Download the "Avare" app - it's free.  Avare is just like Foreflight or the other iThing apps.  You can choose to download VFR and IRF charts, instrument approach procedures, airport information, weather, do flight planning, etc. etc. - and it is ALL free.  No monthly subscription, no download fees, nothing!  It's great - I've been using it for several years now, and they are continually adding features to improve it.  It does everything I need in the cockpit, and it's never cost me a dime.