CoreSite is not a discount colocation provider. You do not go there for cheap rack space. You go there because of who else is in the building.
That is the whole pitch. And it matters more than most people think.
What you actually pay for
Colocation has three cost buckets. Space, power, and interconnection. Most people focus on the first two. That is a mistake.
Space is the cabinet or the cage. Power is billed by the kilowatt, either metered or committed. Interconnection is the cross connect, the fee to run a cable from your gear to someone else's.
CoreSite makes its money on that third bucket. Their campuses are dense. Lots of carriers, cloud on ramps, and content networks all sit in the same building.
So a cross connect to AWS or a Tier 1 carrier is a short cable, not a long haul circuit. That short cable is where the value hides.
Rough pricing by market
Cabinet pricing moves a lot by metro. A full cabinet in a major CoreSite campus runs from about $900 to $2,400 a month, depending on power draw and the market.
The tail is real. A cabinet in a dense downtown site costs more than one in a suburban campus. Same company. Same logo on the door. Different rent.
Power is the swing factor. A cabinet at 5 kW costs a lot less than one at 15 kW. If you undersize your power commit, you pay overage. If you oversize it, you pay for watts you never pull. Get the number right before you sign.
Cross connects at CoreSite typically run $200 to $350 a month each. That sounds small. But ten of them adds up to real money over a three year term.
Where CoreSite pencils out
Here is when the premium is worth it.
You run a lot of traffic to cloud providers. You need low latency to a specific network. You want a private cross connect instead of paying for transit across the public internet. In those cases, the short cable inside a CoreSite building beats a longer path every time.
And here is when it does not pencil out. You just need racks and power for backup gear. You do not care who your neighbors are. In that case you are paying downtown rent for a suburban need.
We saw this with a media firm in Los Angeles. They had two cabinets at a premium interconnection site. Most of the gear was cold standby. It did not need to be there. We moved the standby load to a cheaper facility and kept only the live interconnect at CoreSite. That cut their monthly colo spend by 31 percent.
The traps in the contract
CoreSite contracts have the same traps as every carrier contract. Watch three things.
Power commits. You agree to a minimum kilowatt draw. If your real usage is lower, you still pay the floor. Size it to what you actually use, not what you might use someday.
Cross connect creep. Every new connection is another monthly line. They pile up quietly. Audit them once a year and kill the dead ones.
Renewal windows. The negotiation window is usually 90 days before the end date. Miss it and you can roll into another year at the same rate, or higher. Put the date in your calendar the day you sign.
Bottom line
CoreSite sells access, not cheap space. If your business lives on fast, private links to clouds and carriers, the premium earns its keep. If it does not, you are overpaying for an address.
The way to know is to look at your own bill. How much are you paying for space you do not use? How many cross connects are still active but doing nothing? That is where the money hides.
Not sure if your colo bill is fair? Upload your bill. We will show you what the space, power, and cross connects should cost in your market.
Related reading
→ See a sample bill analysis → Colocation providers we track → Colocation pricing in Los Angeles → How cross connect fees add up