Depends on how long you can wait, IMHO. I, too, am very budget conscious.
I got a used
DW 5002 chain-drive double pedal (list $359) with carrying case (not the plastic one, but a
DW fabric one with a solid lining) on eBay, and turned around and sold my old
Pearl Eliminator double pedal on eBay. All told, I spent less than $100 total to get a like-new
DW, and the pedal is just as good as any of the new ones in the store. Just buy one that's in good shape (the onus is on you, the buyer, to do your homework!) and take good care of it.
Just my $.02.