It's the best and fastest way to level gbs and collect medals. Your only fp loss is your backfill. You get back all the fp you donate. Multiply the fp reward by 1.9 and that's how much that spot costs. Owner of the building is responsible for making those spots lockable at 1.9. i saw the calculator linked in a previous comment.
Terracotta Army level 9 → 10; Places Default rewards FP to put by the owner to secure the place Rewards with rate Number of FP already in Spot/Snipe
a formula to calculate amount of FP's needed to secure a spot would be more usefull now that Inno shows us rewards in our GB's. That's easy: FP's to lock a slot = Math.Ceil [ (Total Level Cost) - (Total Current Contributions) + (Contributions in the Slot to Beat) - (Your Contributions) ] / 2. e.g. Cape, current level 64, 1 FPs contributions
Saturn VI Gate PEGASUS. Or, you can choose a specific Great Building and enter the level that is being built. You will then see the table with rewards for selected level and FP need to block all places in the Great Building. The second table contains the values of the bonuses. See full table and chart of costs and rewards for Saturn VI Gate
Depending on the number, they will fill the Arcs places with the required FP + the patron bonus starting from # 1. Because of this, you will save a lot of FP. Stufe / Arche Bonus: % Sofort einzahlen: Platz 1.
If you're receiving 29,950 FP in GB rewards (for instance, you donate 29,950 FO to a 1.99 thread) each day and you level your Arc from 179 to 180, it will take about 3 years to break even. 30k FP in rewards isn't that high; I bring in 20k just from sniping, not counting 1.9 threads.
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forge of empires fp calculator
