While they're free to download and evaluate, these datatypes are shareware:
"The WarpDT package (WarpJPEG, WarpPNG, WarpTIFF, WarpBMP, WarpPCX, WarpPSD and WarpDTPrefs) is shareware, which means you are expected to register if you find the datatypes useful after an evaluation period of 30 days, and wish to continue using them. "
