Leathers could be the single most important purchase you make for your racing. Your safety and health is the single most important thing to preserve when you race.
MacMan always used to include a mention of this in his safety briefings before track days, "I've seen guys roll up in a motorhome, $20k bike with a $1500 exhaust and $1000 paint job, wearing $400 leathers. Why?"
The problem lately is that there are manufacturers that all get their leathers made in the same place. Pakistan. Now, there's nothing wrong with Pakistan, the Pilot leathers I have *I believe* are made there too. There's other brands I'm sure. It seems though that there are certainly different materials and workmanship that go in to each brand based on their specs. I know the Ebay $200 brands are as well.
So I found out the hard way Saturday the difference between "Keprotect" (or other derivatives of Kevlar fabrics) and other materials in the expansion joints. The issue with mine was that the expansion joint material was (likely) Nylon or some other synthetic and not the Kevlar material (that was advertised on the website). It was pretty easy to tell that it wasn't because the material literally melted away with the impact to the asphalt. When it did, my skin was exposed and I got a nasty dollar-bill size road rash that has since been infected with Staph. My arm was only in contact with the track for a split second because I almost immediately began to do the "ground-sky-ground-sky" routine.
So what do you do? These leathers are marked retail price of around $1500 ("custom racer quality"). That's a lot of money for something that uses such cheap materials.
Well, ask the folks that have been racing for a while and have had some crashes with their equipment. What worked, what didn't, and what they recommend.
For me, it was REALLY easy to compare my Pilot leathers with the Keprotect material in the expansion panels, and the ones I just crashed in and the Nylon material that it has. Not to mention I had a really similar crash in my Pilots a few years ago and you can see how the Keprotect material was just abraded and certainly didn't melt or create a hole. The Nylon in the other suit was really, really stretchy and felt a bit silky (a lot like Under Armor material) and the Keprotect was less pliable, felt "tougher" and much thicker too.
Now, this isn't a plug for Pilot brand. I like mine, but I KNOW there are other brands like Syed, Vanson, and "Name Your Favorite" leathers that are just as good (maybe better?).
The key is to know and understand what you're buying and what you need for your safety.