Another good low cost provider to consider is WholeSaleInternet.net. Their datacenter is located in Kansas City. I've been colocating and renting dedicated servers through them for since 2005.
Servers start at $9 per-month. A comparable example:
I'm colocating a couple of servers there for $40 per-month each, bandwith is 1Gbit unmetered and comes with 5ip's. A couple 1U's and towers. I recently bought a used 1U server off Amazon for $400. It has 48 cores, 96 GB memory and 4x1TB drives and came with a one year warranty on the components.
Hetzner was solid, but their network was sketchy at times.
I live in NJ, so I usually preconfigured my equipment and ship it. I've also sent them bare servers and had them connect a KVM for me to do the setup remotely. They have common replacement parts on hand, I've bought some memory sticks from them and had them swap.
You can check back, they update the list at server availability changes. Other providers there are Dedispec and Joesdatacenter, may have something in stock you're looking for.
I checked with them and they said they only do full rack colo and perhaps you are going through a reseller. Is that the case and if so can you provide details? I'm interested.
I'm currently doing individual COLO (I don't have a rack atm). But I haven't added any space in three years. I've replaced some older equipment, but that's about it. I've been talking with another customer about splitting a rack ($200 each) as I'm spending spending $270 for 6 COLO servers ($240 for the space and $5x6 for additional IP space per-server).
joesdatacenter.com (Kansas City) has single server COLO for $50 a month.
Servers start at $9 per-month. A comparable example:
Dual Xeons - 36 cores / 72 threads - 128GB memory - dual 1TB nvme - 5 IP's $80 per-month $0 setup. Setup with dual 2Tb nvme is $100 per-month.
I'm colocating a couple of servers there for $40 per-month each, bandwith is 1Gbit unmetered and comes with 5ip's. A couple 1U's and towers. I recently bought a used 1U server off Amazon for $400. It has 48 cores, 96 GB memory and 4x1TB drives and came with a one year warranty on the components.
Hetzner was solid, but their network was sketchy at times.