Found a new option for swapping the Auto knob other than the Razo. They're a relatively new company called Sickspeed, they have their own website that's a little cheaper than their eBay store, but they have more products on their eBay store. I emailed them from their site and got a response from the owner, JJ, within 24 hours.
My email:
"Hi, I seen the 175G shift knobs on eBay and they said that they'd fit cars with Auto transmissions, but I also seen a different ad that had a shift knob with an adapter to fit cars with Auto transmissions, this is where I'm confused.
Would I need to buy an adapter or just the shift knob for me to put on to my 1994 Acura Integra automatic?"
(question was about these, 19.99 on their site)
His response the next day:
"Depends what car you have. Since your Integra has a button on it you need the adapter to make it work. So you need to buy the more expensive version with the adapter. If you want a 175g knob we can sell you that one with an adapter for an extra $15. Let me know. -JJ"
Site
http://sickspeed.com/pages/5s10X1p5.html
I'd probably get a black or white one of these for my car: