No, my wedding was about $35,000. We both have large extended families and we also paid for all of our bridal parties expenses (and for a few of them that was also travel).
For the record, I wanted a small wedding with just immediate family and a few close friends that was it, my husband was who wanted to do things bigger. Then my mom and a couple aunts had me convinced I might regret not having something bigger/nicer when I had the chance. My husband was paying though so we did it his way. 13 years later, while I had a nice wedding I still wished it was smaller. We're still happily married.
Invitations - depending on the supplies you may need to buy for the invitations and how many you need, doing DIY may actually be more costly than ordering some online. In the end, no matter how crafty your design is most people will throw it away right after the wedding.
Keep your decoration simple. Instead of second hand stores, unless you're going for a vintage look check out some second hand wedding sites that will have people selling their decorations. People will be selling everything right down to the dress on those sites.
As for things I found useless (waste of money)... program (nobody cares who is who in your wedding). Videographer (we viewed the video a grand total of 1 time, when we first got it). Save the date's (in most cases the invitation is enough notice). Grooms cake, really just 1 cake is enough.
Favors - favors are optional but anything that isn't edible is a waste of money. If it's not edible the majority with be thrown out or left behind.
The wedding itself, those expenses are minimal, where you spend your money is on the reception with feeding people and well their drinks. The best way to cut costs is to limit your guest list.