A good TA will be able to get you at least 5% below what CruisePlanner posted. TA consortiums can also get you special excursions or shipboard credit in addition to the 5% discount.
In 14 years of sailing Regent, I have never seen a "flash sale" but I have seen many specials that do show up.
"The test of a first rate intelligence is the ability to hold two opposed ideas in the mind at the same time and still retain the ability to function."
F Scott Fitzgerald
Silversea Silver Explorer (23nts) - Kangerlussuaq, Greenland - Nome, Alaska - Aug 14
Seven Seas Voyager (30nts) - Dubai - Cape Town - Nov 14