A number of destinations (both domestic and international) do get price dropped when it gets closed to departure date (e.g. 2-7 days) and those segments are fully displayed under Super Deal on TG website. The drawback on this is that dates might not be exactly as your choice (maybe 1-2 days before or after) and round trip option may not be available. Most special deals seem to be one way, however, roundtrip options may come up from time to time.

Nevertheless, waiting for those deals to come up is too risky. Unless ur tickets if refundable and the super deal gives better deal, then you can do the refund and buy new tickets thru super deal.