New PC build for $550?

Is this rig actually worth picking up?

Can I find something with more staying power in the US for roughly the same amount of cash?

Look, you aren't going to find anything better in the US for that kind of money. It’s all the same stuff. Honestly, what you have there seems fine for the price point. With how much graphics card prices have spiked lately, I highly doubt you'll find a better deal elsewhere.