While the spec's of the Amida Simputer model 4200 and those of the HP iPAQ model rx1710 are quite similar, I find that the prices of both the devices on the other hand are vastly different, and the HP iPAQ rx1710 is cheaper by around 6431.00 INR.
HP iPAQ rx1710 has a 203 MHz processor with a 32 MB RAM and a 64K color display, while Amida Simputer 4200 has the same amount of RAM and the same display resolution, but a 206 MHz processor. Other goodies like infra-red connectivity, serial port, USB support, integrated speaker and microphone are also available in both.
Now, the HP iPAQ rx1710 is selling for 13519.00 INR at Indiatimes-Shopping, while Amida is selling Amida Simputer 4200 for 19950 INR. That's a difference of 6431 INR!
I had been quite impressed with the whole logic and vision behind building the Simputer, as you can see here, here and here, but this finding has been a bit of an eye-opener for me.