Read the opening post of the thread about the T4 price reductions... I have quoted it below: Grasp this, the devs actually provided a time and date for the release in advance and a time and date for the price reduction. This allowed for the community to prepare itself for the foreseen update and alter their build. However with the T5 reduction, it was implemented immediately. This gave the players no time to tear down their old buildings for 20% and await the price reduction to change their build like was available in the past. This would have reduced the cost of any build changes by 10% for players already HLBC. This is my major complaint. Therefore I would also like to voice my support to this thread: http://forum.kingdomsatwar.com/viewtopic.php?f=18&t=162006
This is actually irrelevant. T5 was made available on the highlands, a place where T4 was also available, while T4 was also available on the lowlands. This meant that the introduction of a new tier, i.e. T5, meant the replacement of very expensive buildings. With the reduction in T5 prices and the T6 upgrades, the builds are available on different sets of lands. T6 is not available on the highlands, and T5 is not available on Hoarfrost. So a price reduction in T5 would not affect any build changes, as you would not be replacing the T5 with the T6. Due to this difference, no time period for build changing is necessary, seeing as the two events do not affect one another.
As Mango just said, your argument is totally invalid. T5 got introduced to replace T4, so you had to tear down T4 sooner or later. Allowing you to get a higher refund for a week or two before dropping the T4 prices was a good move. Today the devs introduced new levels of T6 buildings that can only be build on HF where no T5 may be build. So why on earth would you expect a price drop on totally unrelated buildings?