BuyItNow or Bid

Hi,
In our ebaykeywords we show list of items in a drop down for a particular
user.The item list is fetched with api call GetSellerList.When the user selects
a particular item ,the item details are shown to the user.
In the details, we show whether the item is a BuyItNow or Bid.

Initially the logic was based on the BuyItNowPrice.If it had value greater than
zero then we assumed it to be a BuyItNow item.This logic failed and users
reported cases.
On investigation it was found that an item which was on auction had
BuyItNowPrice as well.It had bidcount as 0 and BidIncrement value greater than
0.So we based our logic on BidIncrement.This logic failed too.

Even after going through the documentation its not clear as to when the item is
BuyItNow or Bid.I am aware of methods  GetSearchResults  which returns
BuyItNowEnabled flag and  GetItem which returns BuyItNowAvailable flag 
But we need to use GetSellerList method.


I have gone through several items and their 
outputs .Below i have listed 2 whose results are
confusing.

Item id : 8810973879

On ebay this item is shown as BuyItNow listing with price as 1.00 EUR .When
GetItem call was made ,it was seen that the BuyItNowPrice was 0.The  bidcount
was 0 and BidIncrement was 0 and the CurrentPrice was 1.00 EUR
So the question is how can an item be listed as BuyItNow when the BuyItNowPrice
was 0?


Item id : 140000071005

On ebay this item has BuyItNow and Bid buttons.
When GetItem call was made ,it was seen that the BuyItNowPrice was 99.0.The 
bidcount was 0 and BidIncrement was 1.0.So the question is how can an item be
listed as an auction when the bidcount was 0?

Finally ,I want to know using GetSellerList how is it possible to know whether
the item falls into 
Bid or BuyItNow category.We have user complaints regarding this issue and we
have to resolve this ASAP.

Regards,