The Titans are pretty useless. I bought the two 12 inch TFPrime figures last year (Optimus & Bumblebee) from Amazon for US$10 each, and even still I felt cheated. (and the 16 inch pair were 2 & half times the price... so lucky I didn't buy them)

Compared to other TFs products, they are cheap for their size, but not for their level of complexity. And probably only bought for 3-5 year olds.