I'm not much of a drinker...but I'll have a glass to be social
I've been doing my part to rid the earth of excess wine for years now. There are lots of great $10-$15 bottles that will stand up very well against some $50+ bottles. However once you drop down into the $5-$7 range you will definitely notice a difference in taste.
$2 Chuck from Trader Joes - dont' touch the stuff - hangover city.