It's not all about price of course...
If they charge $500 and you charge $700 and include lighting and a sub and they don't then it's harder for them to compare apples to apples.
Also, where are your leads coming from? WOM buyers are, as we said the car sales world, 'lay downs' - they just buy at the price you quote, done.
If you are at a bridal show then yes, you are competing much more on price, or at least the deal of the day.
If you're quoting on thumbtack or such then price is a bigger factor - depending on how you answer the inquiry of course.
If the venue that are referring to you are $125 plate vs $40 a plate you'll get to ask a different price, and possibly be expected to provide a higher level of service and professionalism.
If you have to hustle to get enough gigs to pay for a rich and famous life style (house, food...maybe cable tv too) then getting 10 gigs a year at $1000 vs 25 at $500, of if you work full time and don't have time to venue visit and meet brides at their convenience - it all plays into what you ask, what you deliver.
Generally, if you can deliver more than your competition (and your customers decide who that competition is) for the same price then you 'win' the sale by delivering better value.
You gotta shop the competition to know what you need to do to offer 'more value'.
This next question is serious. After you check out what your competition is doing then what? What if they are ahead or behind you when it comes to price? Do you get to find out what they have to offer for the price they charge? I say most times you don't unless you know them personally. Some can get paid more because they have more to offer. The days of a DJ showing up with a pair of speakers on stands getting paid handsomely is for the most part gone. So with that said what do you have to offer to justify the price you charge? I'll respond later as I got to get ready to go somewhere.