Yes they are although I don't suggest a prelite tree. Never had much luck with those. We got a new tree last year the day after Christmas for $10. It's a 6 foot tree. We will be having two Christmas' this year. In December and again in February. A fake tree just makes more sense for us.
We have always had fake trees. i'm allergic to pine. We used to go all out and string the lights on a plain fake tree, but once my brother and I were older dad switched to prelit. My dad is giving us his old prelit tree. I think prelit makes a lot more sense with a toddler because there will be less for him to pull off of it. Definitely don't go with the fiberoptic ones unless it's a small one for a table.
LAst year for Our first family Christmas I bought a fiber optin 24" tree and it was perfect for us, but DS will be 18 months this year so we want a normal size tree for him.