) As a result, some auctions may not be finished, and you can retrieve
only the current price. Since most of the auctions are likely to go higher, you can use this
average as only a rough guide of an object??™s value. On the other hand, it??™s unlikely that
the objects will drop in price, so the results are very useful as minimum prices.
nNote Auctions occasionally drop in price. Bidders can cancel bids for a limited variety of reasons, and
sellers can cancel bids for a similarly limited set of reasons. Both situations are uncommon, however.
CHAPTER 6 n TRACKING AUCTIONS WITH EBAY 126
MAKING THE PRICES MORE ACCURATE
You have a couple ways to make the prices obtained by the eBay report more accurate:
??? Limit listings to fixed price eBay store listings, which you can do by changing the
ItemTypeFilter parameter of your params hash to 2. Since this will not include regular
auctions, it will limit the scope significantly, and if the goods you are searching for are
uncommon, this could cause a problem.
??? Search all auctions, but only to examine their Buy It Now price.
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