I've used AmmoSeek a few times, and overall, I would say it's been a pretty handy resource. I was hunting around for .223 ammo and found some excellent deals that I wouldn't have come across otherwise. The site does a good job of pulling in listings from various retailers, but I've noticed that prices can fluctuate, so it's smart to act fast if you see something you like. I did run into a couple of sellers that seemed off, so I always check reviews before committing to a purchase. Just make sure you're familiar with the retailer before you pull the trigger, so to speak. Stick to known sellers when possible, and you should be fine!