How about some pics of the garage.

 

I used the rustoleum product from Home Depot....$50/kit Count on one kit per car parking space. So you'll need two kits for an average 2 car garage.

How do I like it? LOVE IT. Worked VERY VERY well, looks great, is super durable, and easy to clean. I have had it done for about 1 year now and it looks like new.

And yes...do NOT skimp on the cleaning/prepwork. Your results are directly related to the prep work. I spent about 4 hours the night before with a metal brush cleaning my garage which was pretty clean and free from grease stains to start with. I think I cleaned the garage 3 times with regular cleaner before I used the included acid. Rolling on the paint the next morning took no more than 30 minutes.

I've never had issue with the paint peeling or lifting. Paying for the more expensive products is not worth it IMO.

 

I did this and it turned out to be a big waste of time and money. It took a ton of paint because the garage was big enough to fit 8 cars, and then the tires just started picking up the paint. There were flaked-off spots everywhere in just a few weeks. Also, you have to be careful because if you paint it without adding something like sand, because the floor can get very slippery when wet.