bub, a bit unclear if you mean 1/2 gallon can or glass. If glass, sure split to 2 1/2 gallon glass containers. It will cost a touch more for 2 corks and airlocks instead of one, but those 1/2 gallons will come in very very handy down the road when you start making bigger batches.
cost saving tips include asking at the bakeries inside Kroger and Walmart for their empty plastic food buckets. They usually give them to you free. Also keep looking everywhere for juice in gallon jugs. Sometimes local walmart and Kroger has some, lots of folks get them at Whole Food places if one is handy. You can buy Carlo Rossi wine in 3 and 4 liter glass jugs. Great inexpensive wine for topping carboys, and a good minicarboy in the deal. Also since I can about guarantee you'll jump in for the large capacity before too long start checking craiglslist for carboys. I got my first 8 in Nashville when driving back from Winchester a couple years back. carboys down south seem a bit cheaper than up north by the prices I've seen.
You will be hooked the moment you try your first batch. Then many batches later you'll realize just how bad that first batch was compared to what you will make then. Later some will age and again you will be amazed at just how good your homemade wine is. It all just keeps getting better, even the stuff you put away thinking it was a dismal failure. Like they say, patience is critical, and the rewards are great for letting the wine do it's thing without interfering with it.
Pam in cinti