You have the gray plastic track, right? Yeah, Thomas Take N Play is the only track that will work with it. I would try Craigslist to see if anyone is selling them. I just bought a huge bag of track pieces and another bag of engines from a lady at work for $45. Retail it would have been well over $300. Good luck!
So, we have a TON of thomas take n play/take along trains...they are the the little die cast metalish ones. I feel like we have spent a fortune on these!!!!
We have the play sets like misty island, mail delivery, etc. Now my boys want to BUILD tracks. So, I was able to find some tracks at toys r us, amazon, etc. But they do not have all opf the ellaborate bridges, houses, tunnles, etc that the wooden thomas sets have.
Thomas Take N Play Charlie