My pics got deleted during the great online photo hosting reset, so they are now reloaded on my page 5 post: How to do a skull w/pics
I used a temp of 180 on my homemade "buck boiler" for several hours with a badger and fox skull. The bits and pieces are a little harder to get off vs. boiling but the teeth do not fall out nor did they crack - both issues if you boil. They came out nice.
Just purchased 1 gallon Baquacil oxidizer at local pool supply for $16.99, so the price is still reasonable. It can be reused and will keep for a while if stored properly. I think one could do a deer skull using only 1 gallon but it would require several steps unless you can figure out how to design a container that would submerge the entire thing using only 1 gallon.