As I'm trying my hardest to stick to our budget for the wedding, I sourced my own invite making materials online. So far, it's cost me approximately £50 to buy all the materials for 40 day invites (with 3 inserts each) and 40 evening invites. I found Wedding Crafter to be a good quality and reasonably priced and have had no problems.
You'd think I'd be over the moon at spending so little on wedding invitations when you can, in this industry, spend in excess of £150 for somebody else to do it for you. That's all well and good if you have budgeted for that expense, or equally don't have the time nor patience or artistic flair to do them yourselves.