The biggest issue (there are many, but this is the MAIN problem) is that people in this thread are viewing their product as a commodity. Why sell printed banners for more than cut? Because they have more value (given you design them correctly).
I understand the mentality you are using Mike, although I strongly disagree. Yes, you invest in equipment that makes your life easier, prints faster, bigger, better... You need to make say, $500 a day to be happy. So, you buy a faster printer so you can print twice as much in the same day. Does that mean you should lower your price by half so you can "stay competitive"? To me that makes absolutely no sense. You'll stay in business, but I don't want to create a job for myself where I just make a wage. If that's the case, why not invest your extra money in the stock market or real estate or whatever else you'd like instead of a printer? We invest to make *more* money. Not to do more work for the same money.
On another note, we do NOT design anything until we have a deposit. This of course is except for existing, established clients. Case in point, my sales guy went on a call on Friday. They wanted to see some examples of what the design would look like before they gave a deposit. Jim politely told the client no, that we require a deposit before starting any artwork. We have an extensive portfolio that speaks for itself and our ability. She said that that would not work for them, as they would need to be sure they liked the design before paying for it. Jim left with an agreement to disagree, figuring we would not hear back from them. Today they asked for a written estimate. He submitted, and we had a deposit about five minutes later. So, don't do design work without a deposit, and if the client goes over the allotted time, bill them for it. The design is the valuable portion of your work <see above!> the rest anyone can print!