I seriously doubt that it costs "hundreds" to euthanize a dog. I wish this were a weekday so that I could check in with my vet. I have had it done but never paid any attention to the price.
I've paid that. Of course, I had the vet out to the house, he euthanized Terra in my husband's arms, wrapped in her favorite blanket, and we rolled her directly into her grave that had already been dug under her favorite tree. There is a grave stone there, marking the spot. Do you know how difficult it is to dig a grave under a tree? It took my husband and the mayor of our little town all morning to do it. Next time, we'll choose a different spot.
We paid about $120 for this service, and then he hit us up for another $100 to subsidize a kennel at the Vetinary School in her memory. That was OK, though because the Vet school had saved her life at age 5 and gave us 10 1/2 bonus years with her.