What is " lowball"

Almost all products have a market price. And, to offer a price significantly below market value is unethical. I don't separate people who I deal with online from people I deal with in person. That said, I don't want to deal with people without ethics. All my ads' prices are firm. Take it or leave it. Any low ballers are considered speculators and are ignored without prejudice.

I do have an item on sale at the moment that I've not seen sold on Agon or anywhere else before as used. Thus, I've listed it as OBO because there is no mkt value set. Flexibility in price in this case is warranted because there isn't a lot of information about this product on the net. So, there is a bit of room to play with for people who are willing to "leap of faith" with this product.

I think I have a better understanding of how to make my offers now but here is my next question.
When I make an offer I do it only when the money is set aside and I am ready to commit. I try not to have offers with different people at the same time. This means I am looking to buy now. How long do you guys wait for replies before making other offers?

Mthieme,
Conventional wisdom suggests that while considering offers and counteroffers the seller has a reasonable time to respond. To avoid tying up your dough waiting on that open ended response, nail it down by providing a time limit in your offer. At the same time spell out all your other terms. For example say: I'll give you $$$ paid how and when for XYZ, its original power supply, power cord, box and manual shipped how and when if you respond by 6pm today.

Genuine sellers respond fairly quickly to sincere and reasonable offers. Market testers, wishful thinkers and daydreamers may not respond at all. Making your offer clear and complete paves the way for agreement on both sides.

Once I commit to an offer I give the seller my phone number. If you truly want someone to communicate with you provide them with every means possible.

Sellers of second hand goods should always price their products with some wiggle room.
Buyers on a forum like this want to feel they got a deal.
Some percentage off, throw in some wires, share shipping costs or offer a solid guarantee, somthing.
I like to see items listed low and have the buyers bid it up to the proper price.

Should be fun.

I'm more annoyed with people who inquire about an item listed for sale, make an offer to buy and then when an agreed figure is decided upon, they back out! Seems to me these folks never intended to buy anything! Just like to play "lookelou" and "kick the tires" or were just looking for some reason not to buy!
P*sses me off!