Don't know about aftermarket m/c bags, but I ordered a Mastech DC Power Supply, waited forever for it to arrive, finally sent a somewhat nasty note only to find out the unit had been shipped the previous day (something about customs delays with the container). I got the exact unit ordered for a good price and is working just fine. If you're looking for rock-bottom deals on the internet, I've learned to expect some disappointment. Sean came through for me...took awhile, but am happy with the end results. Acifica, Inc. could be a bit more timely with email communication, but couldn't we all. It's hard to be perfect when you're running on a thin margin and performing most of the labor yourself...I can (personally) attest to that.