Originally Posted by
clengman
It's uncommon to have a spider that's not integral to the right crank arm. Yours is almost certainly not two pieces. You should be able to get a used 110/74 bcd triple and a couple chainrings for well under $100.
I'm sorry to be ignorant, but could you suggest a product line for me to look for that should be in that range on sale or used? In my searching, I've come across lots of separate spiders that are expensive, but most of the affordable stuff is either riveted or seems to be ISIS, Octalink, or some other non-compatible thing.