Recently I acquired a memory upgrade for my //c (thanks Mutant Pie!) and wanted to make sure I had the latest ROM version, as it includes some bug fixes for the extended memory. The latest ROM version for the Apple //c is 4. I searched everywhere: on eBay the only vendor doesn't mention version 4, Reactive Micro sent me a message that they were reorganizing and had to recreate the images, and would take time.
I finally found a service in Canada that gave me a great price, and had it in my hands in less than a week (I'm in Florida, US), just wanted to share it with the board, it's called EpromPRO (www.eprompro.com). He got the image from apple2.org.za, by the way.
I'm in no way affiliated or receive anything, just happy with the service and quality of the guy.