I think you're missing the point and since no one can answer the questions as to who these clients are we aren't going to get anywhere.
A hotel booking a NYE party is going to charge a lot more for tickets and pay a higher price for entertainment, no problem with that at all. I'm sure they booked the entertainment ahead of time. But, the neighborhood family group planning a get together at the Elks hall for NYE is most likely not going to pay $1500 for entertainment. A family group who decided to throw a last minute party at a local hall will not dish out $1500 just for entertainment. A local bar who want to have something special for their good patrons. The people who drink there regularly. A place where a beer might cost about $3, is not going to put out $1500 for entertainment.
Now these places have a choice, either find someone willing to play music for them at a decent price or turn on the juke box. There is and will always be DJ's who are willing to play on NYE at their local hangout for free beer and $300-$500. Those types of DJ's do not have any impact on those who can easily make $1500 on NYE. Should these people all go without because they're not willing to play for the higher cost DJ just so the higher cost DJ can feel better about themselves? I think not.
If I was called for a hotel NYE function I would expect at least $1500. I don't care when they ask me. If Suzy called me for a family and friends NYE party at the Vets club I would gladly find them a DJ that would do it for around $400-$600. Some people tonight will dine at the Ritz while others will enjoy a Big Mac. It's just the way the world works.