There are tons of printing companies listed in Yellow pages who
can quote you a decent price.
Get your specifications right and done, call them and fax/email
your specs over. Get at least 3 quotes for comparisons.
Don't go for odd paper sizes as they cost you more. Loads of
regular brochures opt for A4, folded into DL size (2 folds, so you
have 6 pages to play with). Flyers can opt for jus a DL size, that
is, a third of horizontal A4 size.