First of all, if you think 100 dollars for a portable digital radio is "very expensive", you must not have amassed much of a nestegg, 700. Poor thing. The first portable cd player (Sony D5...I still have mine, and it still works!) cost 250 bucks, used an external battery "docking station" which held FOUR C-Cell Batteries, in order to power the unit for about an hour...if you're lucky. How times have changed! And will again with HD technology.
For someone with a computer background, you seem awfully content with the status quo of analog radio...noisy, interference-ridden modes, prone to distortion, and narrow audio bandwidth. Multipath, weather-induced interference, etc all GO AWAY with digital modes of operation. Plus they offer additional channels of programming...new revenue streams for the future, new programming services for unserved niche audiences NOW. The world is going digital. Analog modes of transmission WILL END by the middle of the 21st century. It's the way of the world. Ones and Zeroes are the future. Get used to it. We're never going back. If HD isn't the digital technology for terrestrial radio, then there will be another one. And another after that. All audio, video, text, and data will be sent and received digitally.
You're so fond of your 10 dollar pocket radio 700. Look for something comparable in stores. When I was a kid, pocket am/fm mono pocket radios were everywhere. Not so much now! The pocket radios are Walkman-type headphone-based units. Larger portables are boomboxes with stereo speakers. The category is dying because a)-newer types of radios offer better audio, and b)-for pocket use, most people use headphones.
There ARE pocket radios, of course...but they're usually not just AM/FM. Take the Grundig E100. GREAT little pocket radio...AM, FM, PLUS full shortwave coverage, and fm stereo to the headphone jack. A few bucks more, but a helluva lot more "bang for the buck".
If you think a pocket portable is equivalent to a communications receiver, then you're a (insert insult here). Radio reception is 95 percent the antenna, and 5 percent the receiver. But that 5 percent is what radio enthusiasts savor most...trans-continental reception of local am stations, extremely weak clandestine stations in troubled regions of the world, hams doing QRP testing (deliberately using ultra-low power modes for the thrill of long-distance reception of flea-powered broadcasts), etc. THIS IS WHAT THE RADIO HOBBY IS ABOUT...that 5 percent of reception that can only be had with a combination of a great antenna, AND a truly exceptional radio. Best Buy got rid of their table-top radios, the boom-boxes are in the back of the store, and now there are many Sony Walkman and hand-held radios up by the cell phones, where they will sell.