No. Absolutely not.
Suppose you go to an auction and there's a really nice widget for sale. If you went into a store to buy the widget, it'd cost $100. But there's a note on this widget saying that bidding starts at $5 and that it's a reserve auction--meaning there's a minimum price the seller will accept.
If you bid $5, will you get the widget? Maybe yes. Probably no.
That posted number may or may not reflect the true value of the widget. Same with a house.
There may be other people interested in buying the widget. They may be willing to pay more than you. Same with a house.
You don't know what the reserve is. Maybe (though unlikely) it's $5. It may be $20, or $50, or $75. If bidding doesn't get that high, the seller won't part with the widget. Same with a house. The lender has some figure in mind, and won't go below that.
And imagine if, after the auction, the auctioneer had to fax all the paperwork to the owner, who might take 3 weeks, or 3 months, or 6 months, to decide whether to accept your offer. That's how a short sale works.
So, no. You can't expect a relatively quick resolution.