And since we are kinda on the topic of c-list,
A few things that I HATE when people do on c-list:
And then there have been the really good deals on something that I have been looking for, for awhile. E-mail only. I will e-mail within 5-minutes of the ad becomming live (I browse c-list often on my days off). No reply until 8 hours later to tell me the item has sole

That has happened to me several times.

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I usually try to respond to my ads quickly, but sometimes I can't. Usually, if I was the seller and I did this to you, it means you were not the first response, and someone who responded before you got the item. In other words, the fact that you didn't get a response until 8 hours later doesn't mean that there was 8 hours for other people to get in and buy it out from under you. It means that the guy who responded one minute faster than you ended up buying it, and I didn't get around to letting you know for 8 hours--which, still, I admit, is frustrating, and I try not to do it, but it happens. Sometimes, I'll delay responding because I would rather say, "Yes, come get it," or, "No, it sold," rather than, "You are 3rd in line and I will let you know."
I'll tell you what I hate about CL: When we agree on a price on the phone, or the ad clearly says, "FIRM," and somebody says they're going to buy it, so I stop responding to other offers, and then they show up and try to haggle. If you didn't want to pay the asking price, I could have sold it to a bunch of other people before you even got here, but I held it for you, and I expect you to pay what we agreed.
It'd be one thing if this was a car or something, where you always expect a little haggling based on condition, and you'd never agree to a price sight-unseen, but for smaller items, where the condition is as described, it's just infuriating.
I also hate it when people claim they don't have the money, like, you've agreed on $55 for something and they pull five $10 bills out and say, "Well, I've got $50--will you take that?" And then if you say no, they have the gall to pull another $5 out of their pocket which they had the whole time. The first time this happened, I was so stunned I didn't say anything, but the next time, I swear I'm going to tell them to take a hike.
Also, if you're buying something on CL, please for goodness's sake, assume it's a cash transaction. If you want to pay by check, ask before-hand. Don't show up and pull out your checkbook and only THEN ask, "Will you take a check," because if the seller is anything like me, you're going to be doing a trip to an ATM. And that's especially awkward if we have already loaded my lambs into the back of your truck.