I will probably end up making my own ones but dream about getting letterpress invites. I love stationary (and also have friends who totally appreciate it too) so if I can find someone who can do it cheaper than usual I'd like to get them.
Not sure where you are but you could probably do it correspondence etc if you have the time but i totally reccomend the lady who did mine. Shes in Townsville, http://www.pinknoisecreative.com/
We got ours at a good price. She is just starting out so looking to build herself a good portfolio/client base etc so you might be able to negotiate prices with her. And if you are limited on cost, she might be able to help you figure out keeping those costs down through materials. Also, since a lot of what you pay invite people is for their time, if you can do the majority of the design yourself, you can get your costs down on her work per hour.
I'm like you, i love stationary and beautiful invites so we always knew we were going to be shelling out extra money for professional work. To me, its totally worth it but thats cause i'm a bit spazzy when it comes to arts and craft. if you're a bit crafty maybe get her to design and print but you put it all together yourself...probably save you heaps.
Even if you want to try and find a graphic designer closer to you, most of these options should still apply. I'm just spruiking this one cause she did such a fantastic job on ours (and because our invites only went out a couple of days ago and i'm still super in love/excited in them!! I'm a walking bilboard for this chick's work now...people are like...why are you smiling and then i'm all like "OMG have you seen my invites!!!! xxx did them and their freaken awesome!!!!"