those are some adorable kitties. I read your story, so sorry to hear what happened
Have you tried looking around for places that help with spaying / neutering?. When tali got our two done, he was given a certificate to help with the costs and it ended up being pretty cheap.
I had a look around on the internet and found a site called http://www.dumpstercats.org
They had information on getting certificates. I saw on your ebay site that you are in PA so thought you might be interested in this, I don't know how close it is to you, but maybe they can point you in the right direction if they themselves can't help:
The SPAYED CLUB Frazer, PA (610) 275-7486
Certificates from $10.00 to $55.00 (based on situation)
Please call them directly for current pricing.
Nearest participating veterinarian to DE is in Chadds Ford, PA
Call and leave message with name and address for application
You can also take a look here: http://www.dumpstercats.org/certificates.htm
I hope that helps!