If I colonize a planet with a capital ship colonizer that gives a % decrease in cost of planetary upgrades it takes a while to kick it.

For example, I use a mothership with a level 2 colonize giving me 40% cost reduction for 480 seconds (I think its 480 seconds... level 3 gives you 600 seconds, of that I am certain).
I open up the planet upgrade and I see full price, I hover the mouse and wait... if I was to click then I WOULD pay full price, after about 10-20 seconds the price updates with the lower price...

It took me a while to realise it, so for a while I was opening the planet upgrade as fast as possible after colonizing and immediately purchase all upgrades to "save money" where in fact I was paying full price.

I have also noticed that if I cancel an upgrade I will NOT be refunded the full price...
I just purchased a planet upgrade at a reduced price, canceled after about 2% were constructed, and clearly saw that I received less then I put in (since I didn't have enough to buy it a second time)... since you cannot switch construction order, if you have chose to build up the entire planet and decide you need to have logistics or health done FIRST then you have to cancel a bunch of upgrades, loose tons of money, and then add them back again.

Also the advant tech that reduces the cost of searching planets "stacks" with a capital's ship cost reduction to give you a price of 0 of everything to search planets....

And the tec freebie is the worst of them all... not only do free resource collectors not even come CLOSE to cost reduction. (20, 40, and 60% cost reduction on purchasing planetary upgrades... the tec gets a discount on purchasing astroid miners and gets 0/1/2 free based on level)... But also the "free" ones are almost always wasted on enemy planets because the ships will bombard it and colonize it automatically before the enemy extractors were destroyed, so none are built.

The whole notion of getting a timed resource descrease is silly, and I have abandoned planets with little to no upgrades to settle them again for the cost reduction and then bought all the upgrades (it can cost a LOT to buy all of those...)
It would have made a lot more sense if there was a passive decrease in cost for planets that have that ship in orbit... that is, buying an upgrade while your mothership is orbit around a plent = discount...
And for the tec the colonizer should build free extractors AND capture ones in astroid belts... it would still not be even close to the usefulness of the other two race's colonizer capital ship.. but that is ok... balance is an overall faction thing, not having the exact same abilities with different name and graphics. The tec colonizer has the ion canon and the ability to increase damage, so its the most useful for combat of the three colonizers.

I think there was another bug but I forgot...