What would you do?

So today's post is going to be a bit of a vent..so bear with me. I am angry and frustrated right now. As some of you may or may not know, we are trying to fix up our house and we have very little money to do it with. Our funds are dwindling rapidly and we still have the biggest room to deal with. Anyway, one of the things that I want to do is get 'new' appliances. By 'new' I mean used but newer than what we have and all in the same color (black). Anyway, yesterday, I found an ad on craigslist which I have been scouring every day. It was an ad for a black oven, dishwasher and over the range microwave. They had to have them out by tonight because they're getting new ones. They looked really good. They didn't have an asking price on them it said to just make an offer. So I emailed and made an offer for the oven. A low offer. I knew it was low..I figured if she wanted she could counter offer. She emailed back just minutes later and said, "we'll take it!" I was so excited. We emailed back and fourth a few times about when to pick up, etc. In the midst of it I asked her what she would take for all three things. She gave me a figure. I talked it over with Josh and we decided to go ahead and do it. I agreed, she agreed, we all agreed. We planned on picking them up the next evening (tonight). Later on last night I get an email from her saying that her husband was furious with her, she accepted my offer without consulting him and throughout the day they had gotten several offers that were much higher than mine. Either I had to pay X number of dollars higher to match other offers or they were going to give it to someone else.

Now does this surprise me? No. I've dealt in craigslist enough to know that people are flaky and generally only out for money. However, what the heck? She is the one that gave me the figure. She agreed to sell it to me for whatever price. What has happened to common courtesy, honesty, integrity, not to mention honor? I thought long and hard last night about this and put myself in this position to think about what I would do if I was there. Actually, in all fairness, I know better than to actually be in this situation. What she should have said was either, let's wait til the end of the day and I'll see if any other offers come in, or I need to check with my husband before accepting offers...I actually have been in this position before..not this large of a scale of things, but I know that I've sold things to people when I could have sold it for more because I agreed to sell it for a smaller price. It's certainly not easy to do, but I know it's the right thing. I'm just so disappointed about this. I was so looking forward to my new oven. So what would you have done?