Let's make it simple, in 3 points:

One example among many:

Duration Price Delta Add Cost Proof
BUS DISCOTHEQUE 4h 1090 €
PARTY BUS ou SOIREE BUS 4h 2140 € +1050 € +96%
ALL NIGHT BUS 4h 1490 € +400 € +35%
STAN & WALTER 4h 1720 € +630 € +55%

The Service includes
BUS DISCOTHEQUE Everything is included (except alcohol and caterer)
PARTY BUS Pay TV, Pay display, Pay red carpet, Set times, Pay departure locations
SOIREE BUS Pay TV, Pay display, Pay red carpet, Set times, Pay departure locations
ALL NIGHT BUS see quote
STAN & WALTER see quote

Fleet Total
BUS DISCOTHEQUE 2 bus for 25 personnes
5 bus for 30 personnes
4 bus for 65 personnes
11 BUS
PARTY BUS 1 bus for 20 personnes (sold for 30) 1 BUS
SOIREE BUS 1 bus for 30 personnes (sold for 45) 1 BUS
ALL NIGHT BUS 1 bus for 30 personnes (sold for 60) 1 BUS
STAN & WALTER 1 bus for 40 personnes (sold pour 50) 1 BUS

Nothing absolutely nothing, not only nothing justifies but worse there is even less service.
So don't believe anything they say to you on the phone, "we are top of the range, it's luxury, prestige etc ... all these are just words nothing more, their only objective is is to charge you more.
Come and meet us, visit our buses and compare with the others, we are unbeatable on price, service, vehicles

To sum up

Elsewhere it is much worse and much more expensive.
Are you sure you want to entrust your event to these people, and pay a lot more for less service?
Are you sure that you and your guests do not deserve more comfort, more security, more service?
Of course yes, so don't hesitate for a second the nightclub buses are US