Well it does.
Especially when you compare envelopes
Square or oversized invites might look nice,
but they can be double (or more) the cost to post.
For example:
To post a 13 x 18.5cm envelope within Australia is currently $1.50 each.
To post a Square or C5 envelope within Australia is currently $3.00 each.
(current costs as at June 2025)
And boxed invites cost waaaaay more.
Step away from the boxes, if you are on a budget!
So if you’re mailing most of your invites,
check the postage rate for your envelope size
before you commit.
If you can hand deliver half of your invitations
it isn't such a big deal.