I believe Shonaa that while there is very little competition from multiple buyers wanting the same property in winter, iff a seller is motivated, they will definately consider a lower offer or a contigent offer during this time frame. I also believe many sellers are more flexible on their home's sale price during winter because they anticipate fewer ready, willing and able buyers. Also, you get to see what the home is really made of - is it well insulated? How does the greenery hold up in the cold weather? And so on.
Hope this information helps.