Cap,
You can't put a price on it regardless of the socio-economic status of the participants.
It all boils down to the couples individual choices made concerning the wedding.

Silk flowers or real ones, ...roses, daisies, or hot-house orchids, ...or possibly no flowers at all?
Location... church, backyard, country club, beach, ...beach half-way around the world.
Wedding Dress... 2nd hand store, ...antique family hierloom, ...off the rack, ...Vera Wang
Wedding Singer... Adam Sandler, ...your cousin, ...Mariah Carey
Invitations: ...embossed ...not embossed.
The variables are infinite and all boil down to a matter of personal choice.