Got to thinking about my sewing machines and how much they cost. I bought a Janome in 1993, an Innovis in 2005, and a couple of antique machines. All in all, I've averaged about $20 a month over the last 20 years, including service costs. I don't think that's bad - just one large pizza I didn't eat every month or a Starbucks Latte every week (which calories I can certainly have missed).
I haven't spent the thousands on an embroidery machine or a long-arm that I wanted to, but maybe in the future, I might.