Thinking about storage fees for my Gold IRA - what's everyone else seeing?

• •Okay, so I've been kicking the tires on my Gold IRA account lately, and the one thing that keeps nagging at me are these storage fees.
• •Being a construction guy myself, I see physical value every day, so this ain't some abstract investment to me.
• •I’m based out of Chicago, and I've got my stuff in a reputable depository, so I'm not looking to move it to my basement, obviously.

Okay, so I've been kicking the tires on my Gold IRA account lately, and the one thing that keeps nagging at me are these storage fees. I've got a decent chunk of change in there, north of $400k in physical gold and some platinum, and I'm a big believer in having tangible assets, especially with how wonky the market's been. Being a construction guy myself, I see physical value every day, so this ain't some abstract investment to me. But every time I see that quarterly statement with the storage fees, I just wonder if I'm getting the best deal or if there's something better out there.

Currently, I'm paying a flat annual fee, which sounds good on paper, but when you break it down by basis points, it feels like it adds up, especially as the value of my metals portfolio grows. I remember when I first opened this thing a few years back, the percentage felt negligible, but now with the gains, it's becoming a more noticeable line item. I’m based out of Chicago, and I've got my stuff in a reputable depository, so I'm not looking to move it to my basement, obviously. But I'm always looking for ways to optimize, just like I do with my business expenses.

So, for those of you with significant holdings in your Gold or Platinum IRAs, what kind of storage fees are you paying? Is it a flat fee, a percentage, or something else entirely? Have any of you successfully negotiated lower fees with your custodian or depository when your portfolio size increased? And how often do you even review these charges? Just trying to get a feel for what’s considered "normal" or if I should be pushing back a bit more on my current setup.