I am interested in getting a summing box as I want to send mulitple sends from my DAW. I don't want to mix in the box but I don't really want to get a mixer, namely for reasons of space and obsolete functions. Unfortunately summing boxes are so expensive. Why do these things cost so much? They have less features than mixers but cost nearly twice as much as a Allen and Heath or Mackie mixer. Are there any alternatives to Audient, SPL and other super expensive summing devices.