A nice looing façade can help lift a DJ's perception of themselves. The overall look of the façade mixed in with the lighting helps sell an experience as well
However, just adding a façade isn't going to help justify a price hundreds of dollars higher than the next DJ who also has great reviews, and good reputation as well.
There are DJs charging $2,600 for a ceremony and reception and show up with the same equipment as a $1,000 DJ would and no façade....not even any lighting effects! It's a matter of their market, and the market segment that DJ is marketing to (and how well they present and market themselves to those higher income circles).
One of the DJ's at the agency I work with uses no facade. He shows up with a 12 inch sub, and 2 10 inch EV Speakers. He sets up no lights. If they want some lights, he sets up 2 ADJ Vertigos, and a couple of up lights. Nothing special at all. He is in with some high end wedding planners who refer him. He charges $2,000 minimum to do a wedding these days unless it's a slow date. He also doesn't travel more than 40 miles from his house either.
He will add in up lighting...Charges $1,000 for 20 up lights. He get's clients to spend $3,000 on DJ and 20 up lights.
My clientele ain't spending that much on booking me, BUT I'm not marketing to the top 2% income earning group either. I also prefer to offer a strong value to my clients. It's hard for me to justify my price at 3K for DJ and up lighting. However, there are DJs out there getting that, and don't even use a Façade!