PSA is a great vendor if you understand what to expect going into it. They don't ship same day, often not same week. If you need parts in a hurry, it's the wrong place to go. If you're not in a hurry, and you're okay with your order shipping when it ships (maybe same week, maybe within 30 days), and you want to save money - their prices are hard to beat.
Example: Recent 30% off all reloading stuff sale. If you need a set of dies so you can have ammo rolled for next week - not the best option. If you've had in the back of your mind "I should pick up a set of XX dies next time I see a good sale" - then it's exactly what you need. I just got a set of Hornady .45ACP dies for $27.99 - that's pretty hard to beat. As well as the few other odds and ends I added to it.*
Their shipping costs aren't the best in the business, but they don't gouge at all, either. (I'd love to see a USPS Flat Rate option, but I also understand a high volume Internet retailer can't feasibly determine what orders they can fit in a small flat rate box. Can't have everything you want, and some of their better sales more than make up for it.)
*- One of those small things was Hornady Lock-n-Load bushings, because I'm lazy and I love how easy it is to just drop in a die in my new Rockchucker. If you're not buying them on sale like the one referenced above, Amazon Prime sells the conversion kit with three bushings cheaper than just the three bushings. Best other price I've seen.