Oh hun - if you can grow weeds you can grow tomatoes!

I was going to suggest growing your own or just buying fresh ones before I finished reading your post.

If you don't have the room to grow some buy some when they are in glut (about now in many places) when they are realyl cheap and bottle them.

Many people have lost the art of preserving but it is a lot of fun - and addictive - you just need ome space in the pantry.