I had Dell's 24x7x365 4 hour, on-site service contract for a rack of 16 identical 1U servers. "4 hours" was for them to
respond to my call (phone or email, I can't remember). Their response was not showing up on-site with the part, but asking me to run a long series of tests, including brining the machine down, swapping out parts, resetting the BIOS, etc. Once I did all that, they ordered the part, then scheduled a delivery. It was 3-4 days, minimum, to get something fixed.
For the $1,909 price per server: I followed the link to Dell's site and tried to configure the R515 for myself. I added the second processor and left it set to the worse one, added the cheapest 16GB memory option, the redundant power supply and rails. That was $1,999.
A single, 250GB HD seems a bit "lite" for a server, even for one that does mostly processing. I didn't look into the networking or anything. I'm guessing at least another $1k to make it reasonable, probably more like $2k.