I have a trash bin with plenty of room - so if you're still sending it to the trash bin, send it to mine.
The reason why you would pay the premium charge _and_ still pay for Win500 is because they are two different beasts - two different services. You pay Don Starr for the Win500 software that you use to program your scanner and you pay RadioReference for the ability to use Win500 to download system data and import it directly into your scanner.
The two work hand in hand, but are in no way affiliated with each other. So if you pay Radio Reference for the premium subscription, this in no way benefits Don Starr (who wrote the program you'd be using to program your scanner), and if you pay Don Starr for the Win500 program and you don't pay RadioReference for the Premium Subscription, then Lindsay Blanton would not get paid for the fine work he puts into creating/maintaining the APIs that are used to allow Win500 and other programs to access the data via webservice and import it into your scanner
I know, you were frustrated... it does seem that purchasing the $500 dollar scanner is never enough - there is always something more one has to get to have the 'complete package.' But, both the RR subscription and Don Starr's software are well worth the money you would pay for them in the long run. I'd encourage you to take another stab at it, and ask questions on here if you need to.
Mike