Well, however you see it. I've dealt with multiple individuals on different forums in the past with paypal, the items sold or bought in question were premium accounts for certain filehosts including but not least; rapidshare, multiupload, hotfile and what not. I've not occurred any problems with them in the past. You're entitled to your own opinion, however an offer is an offer, whether you take it or not is up to you.
Now, I'm not sure what the problem is with offering to liquidate a stock that looks like it's about to collapse in the current market but if you have anything against the offer, sure - that's what you're entitled to. I may be new to this forum, but I'm sure a certain amount of trust will be able to be developed if we (me and my potential seller) keep in contact during the duration of the deal.
There's no reason for anyone to charge less then the current bid price for shares. Yeah, the price could be lower in an hour, but they can sell
now for more then what you're paying, and get bitcoin. So why would anyone do it?
The only reason I could come up with this late would be they're tired of losing BTC and they want out of the whole market business. Investing in a company and losing soo much would make any new investor or (potentially) an old investor tired and doubtful of future investments thus they'll want to liquidate the current stock which they're losing soo much on and stop investing in BTC centered companies. Obviously, this is open for debate but from my point of view, this is how I see it.
Why I charge less is because I've spent soo much this week so I'm sticking to my budget of wasting a certain amount of money before my next pay arrives. As with anything, there's no reason to go for an offer because it looks sweet compared to potentially losing everything however if a person wants to accept my offer, then so be it - given that my offer is still open when I wake up.