You can buy resist and coat your own. But toner seems cheap.

The major advantages of UV would be that the size of your boards grows. At a certain point in size, toner transfer would become a major hassle achieving consistency and accuracy.

The major limitations of toner transfer that I'm aware of are 1. Slight shrinkage of the transfer is typical. 2. Chance for significant transfer errors grows exponentially with board size. However uv photoresist can solve this problem.

I am so glad that you shared this useful information with us. It is pretty helpful.Hope you can write again.