If you just use it for cooking, there are some decent (ouch) boxed wines. Many are vacuum sealed which prevents light and air from being in contact with the wine... and will allow you to use as little or as much as you want for cooking. Suprizingly these can hold as much as 3 bottles worth in one container, so for the $20 you could be fine for a long time. There is a brand that is slipping my mind right now... Black box... that is pretty decent for this purpose.
NEBS, KCBS CBJ
FEC 100, Lang 60M, Jamie Geer Backyard
Viking Professional Gasser