Here is the breakdown of the costs for our invitations:
70 envelopes from Paper Source: $22.63
Wraparound labels: $3.63
Glue stick: $1.79
Card stock from Big Lots: $1.00
Doily edge punch $14.99
Tape runner: $1.00
RSVP stamp: $8.25
Paper when calculated by per piece: $6.30
Total cost: $89.19
Total invites: 55
Cost per invite: $1.62
Compare to this invitation from Wedding Paper Divas that costs $185.90 for just plain white envelopes, the invitation cards, and response cards alone.
Take that, ridiculously expensive wedding industry!