George Santayana stated, “Those who do not learn from history are doomed to repeat it.”
Although I agree in part with Chgo Agent that there are agents who are doing some of their clients a potential disservice by preaching the NIAGTTB message, I disagree with the recommendation that all investors should wait for the market to improve. Warren Buffet is a serious investor who knows what he's doing; he practices and teaches the mantra: "Be fearful when others are greedy and greedy when others are fearful."
Any time can be a good time to buy--provided the buyer knows what s/he is doing. In the height of the Depression, the unemployment rate reached about 25%--but some people still had jobs and were making money. For example, Fred Trump (Donald Trump's father) was one of those people; he established his business and made money during the Depression.
Please keep in mind that all investors--or other buyers for that matter--don't buy for the same reasons. There's no one-size-fits-all strategy for buying, so there shouldn't be one for marketing.
Any property can be a great investment if acquired at the right price; similarly, any property can be a bad investment if acquired at the wrong price. Smart investors purchase their properties at wholesale prices (20%-30% off of the market value). Investors aren't the only ones who purchase products and services from their suppliers at wholesale prices, add value, and resale the end products at retail prices (for a profit). Buy low, and sell high . . . and . . . profit on the buy, and realize it on the sale . . . these are two important mantras in business. Most manufacturers, physicians, educators, farmers, car-dealer owners, etc purchase at least a portion of their supplies at wholesale prices; and they sell their products/services at retail prices too. Also, that "deep discount" is NOT the profit from the transaction; instead, it's the margin (sales price - costs). Of course, the profit is included in the margin. Keep in mind most of the margin goes towards fees: legal, tax, document recording, banking, environment tests, pest control, security, theft, weather-related expenses (flooding, down power lines, burst pipes, etc), appraisal, inspection, ALTA survey, marketing/sales, staging, title, insurance, cost of money (points, interest, draws, deposits, etc), utilities, licenses/permits, use changes, on-site property and project management, clean-up, trash removal (ie dumpster), accounting, and repairs (materials and labor).
Also, please keep in mind that short-term investors (wholesalers, flippers, etc) and long-term investors evaluate each potential opportunity using different approaches. The prior use comps and other market data to determine the value of a property; whereas the latter use an income analysis (which is definitely used more extensively in commercial real-estate). The latter care less about the current market value of a property, and more about its cash-flow. So, whether or not the prices continue to fall, as long as a property has a positive cash-flow then it could be a good/great deal for someone.
One more thing . . . earlier someone mentioned that the days of 100% financing are gone. That's not entirely true. Although most conventional, residential lenders don't do 100% financing anymore, there are other options--especially for investors: commercial financing (for certain deals), and creative financing. - Earlier today