Could you not do them yourself, you can get a reasonable gold print using Word or Publisher, obviously it will not be shiny like a printer could do it. There are lots of small cottage industry people now that have changed from cardmaking to doing wedding stationery, although you would expect to see samples and the timescale might be a bit close or not possible, but try doing a search on Google and see what you get. If you need help with getting the gold print on Word etc I would be happy to give you instructions, just post back again on here if so.
Jules