My quick two cents ~ I think it's more about finding the right market. If you have an $80,000 Porsche for sale and you take it around to people who either can't afford it or to people who would never buy a luxury vehicle, does that mean you should sell your Porsche for $40,000 instead?
I respectfully disagree with the, "Something is better than nothing" approach. It's different when your just starting out and you still have a ways to go, but those who have great skill and have spent a lot of time developing their t
alents, need to value their work or no one else will.
No matter what type of creative industry you are in, there will always be people who are going to try to get what they can from you for as little $$ as possible. Everyone places value on things differently. Just because you get that person who says, "How much??!!" doesn't mean you should feel discouraged and lower the value of your work. It's about placing the proper value on your work & talent and finding the right market ~ those who either want your product, no matter the cost and those who care about the cost, but love your work so much, that they will save up to buy it.
Value yourself... if you don't, why would anyone else?