In this post, I am comparing the benefit of buying gold through nobility points versus buying crystals to earn gold from attacks. I'll explain the results by showing the calculations below, but first a summary: 1) With only Tier 3 buildings, you need to earn at least 3,365,385 gold per hit to make more from $20 of crystals than with $20 of nobility points. 2) With only Tier 4 buildings, you need to earn at least 21,033,654 gold per hit to make more from $20 of crystals than with $20 of nobility points. The calculations below assume you have at least 1 balanced troop building for 26 hits per full troop run. But with the information I show below, you can recalculate the amount for 24 hits, if you like. Here's the calculations: Tier 3: Nobility 210,000,000 gold / oracle 15 nob / oracle 14,000,000 gold / nob 200 nob / purchase 2,800,000,000 gold / purchase 20 $ / purchase 140,000,000 gold / $ Tier 3: Crystals, required avg. gold per hit (26 hits) 3,365,385 gold / hit 26 hits / run 87,500,000 gold / run 32 crystals / purchase 2,800,000,000 gold / purchase 20 $ / purchase 140,000,000 gold / $ Tier 3: Crystals, required avg. gold per hit (24 hits) 3,645,833 gold / hit 24 hits / run 87,500,000 gold / run 32 crystals / purchase 2,800,000,000 gold / purchase 20 $ / purchase 140,000,000 gold / $ Tier 4: Nobility 1,312,500,000 gold / oracle 15 nob / oracle 87,500,000 gold / nob 200 nob / purchase 17,500,000,000 gold / purchase 20 $ / purchase 875,000,000 gold / $ Tier4: Crystals, required avg. gold per hit (26 hits) 21,033,654 gold / hit 26 hits / run 546,875,000 gold / run 32 crystals / purchase 17,500,000,000 gold / purchase 20 $ / purchase 875,000,000 gold / $ Tier4: Crystals, required avg. gold per hit (24 hits) 22,786,458 gold / hit 24 hits / run 546,875,000 gold / run 32 crystals / purchase 17,500,000,000 gold / purchase 20 $ / purchase 875,000,000 gold / $ and in general, using 10M/hit 10,000,000 gold / hit 26 hits / run 260,000,000 gold / run 32 crystals / purchase 8,320,000,000 gold / purchase 20 $ / purchase 416,000,000 gold / $ 65 min / run (regen) 240,000,000 gold / hour 0.58 $ / hour and for the 24 hits per full troop run... 10,000,000 gold / hit 24 hits / run 240,000,000 gold / run 32 crystals / purchase 7,680,000,000 gold / purchase 20 $ / purchase 384,000,000 gold / $ 60 min / run (regen) 240,000,000 gold / hour 0.63 $ / hour You can use the nobility points calculations of 140M/$ and 875M/$ to figure out the value of any particular build. I have a number of thoughts, but I'll keep my editorial opinions and thoughts to myself for now. What do you think about this? -- StoneFord
I think for most with between 1 and 12 t4 buildings it's best to buy the nobs then the crystals. If you are closer to bc t4 you should make enough that the crystals might be more worth it