Try buying the biggest spool of wire you can fit into your machine. If you use SS, or regular rod, a 10lb spool is maybe only 1/2 again as expensive as a 2 lb spool. And, a 30lb spool is relatively giving you a lot of extra wire for a given price. You may need an adapter to fit a bigger spool, but you will save money in the long run. And, the nice thing.... wire on a spool is still good in 6 months, it doesn't grow mold. Unles you let it rust. That is not so good.