When I opened aa.com this morning I saw the following:
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Fare Sale Alerts:

Boston to Brussels $1860*
New York Kennedy to Manchester $240* ...
* Fares shown are each way, based on round-trip purchase. Taxes, fees and conditions apply.
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BOS-BRU for $1860* each way based on roundtrip +tax is hardly a bargain in coach. Of course, if you click on a link and chose available highlighted days for this "bargain" fare the prices are different (lower in this case). Personally, I rarely find this "Fare Sale Alerts" feature working. AA should fix it or drop it all together.