This place is hit or miss.
Part of the fun is the search for the part you need and pulling it yourself. I'm not highly skilled when it comes to cars, but I can hold my own. It's also good practice. For example, I needed to replace a window regulator on my car and decided to get the part from here. By pulling the part from the junk car first, I had the leeway to make mistakes when removing and replacing the door panel. When I had to do the repair on my own car, I was more familiar with the process and less likely to mess something up. Plus, the part was twice as expensive from eBay and six times as expensive from O'Reilly, so the price was right.
When they get new inventory, the website is updated with the year, make, model, and exact location on the lot, which is nice because I wouldn't want to make the drive out to North Las Vegas unless a similar car to mine had been placed on the lot recently. You'll have the most luck if you want to pull from 15-20 year old cars, some luck from 10-15 year old cars, and close to zero luck on newer than 10 year old cars. This makes sense because newer cars are more likely to still be on the road or salvaged for parts rather than ending up in a junk yard as a whole car.
If a car has already been on the lot for a while, it might already be picked clean. In some instances, you need to get there immediately depending on what part you want. One time all I wanted was a sun visor and saw that a similar car was placed on the lot that day. I made the trek the next morning and saw that the car was down to almost bare bones after being on the lot less than 24 hours. After several subsequent visits I've still never been able to find the passenger side sun visor that I want, and I refuse to pay $50-60 on eBay for a sun visor that rarely gets used.
Hopefully I get rid of my car before I need anything else replaced, but in the meantime, at least I know I'll have Nevada Pic A Part as an option for parts.