I have a fairly lightly used SRC2494 for sale. This is a fairly flexible unit that can be an A/D, a D/A, or a D/D SRC. There is fair bit of info out there on this if you look around, although in the hi-fi world most just use it as a pretty decent cheap DAC.
I used this in an application where I actually couldn't find any other piece of gear that would work - as a SRC slaved to an external word clock (you'd expect that to be a more common application, but I guess not). This allowed digital inputs to be resampled to be synchronous to my pro audio interface so I could run fixed-sample-rate FIR filters over arbitrary sources. Worked very well in that capacity.
These currently go for about $160, asking $100 plus shipping from 80207.
