I do think that the +1 Stam Gain / Hour price needs revising, It is ludicrously expensive at present ($3.75 for +1/ hour). If it was cheaper then more players would buy it and probably buy more Max Stam as a result.
Cheers
Its not expensive at all, honestly. Once you get it fully upgraded.. You see the difference. Its bigger than most people think.
[*:1zny9j7q]Stamina (wo/ Guild Bonus) +50 per hour * 24 hours = 1,200 stamina.
[*:1zny9j7q]Stamina (w/ Guild Bonus) +75 per hour * 24 hours = 1,800 stamina.
[*:1zny9j7q]Stamina (w/Guild Bonus) +90 per hour * 24 hours = 2,160 stamina.
Add in what you get from Epics, Relics, Starter Pack, and the Epic Quest and you can get an easy +98 no problem.
[*:1zny9j7q]Stamina (w/ Guild Bonus) +98 per hour * 24 hours = 2,352.
Without taxing your gold or Sacrifice, later on you can make up to 20+ FSP per hunt on 10k stamina. Let's say you made 25 FSP per hunt, just for easier math.
[*:1zny9j7q]10,000 stamina ÷ 2,160 stamina a day = 4.63 days to get to full stamina.
Now we get to the fun part. It takes 625 FSP to fully upgrade your stamina gain. With 25 FSP per hunt, even if it was a little less. You'd still take a bit to work it off.
[*:1zny9j7q]625 FSP ÷ 25 FSP each hunt (w/ full stamina & stamina gains) = 25 hunts.
[*:1zny9j7q]25 hunts * 4.63 days wait between = 115.8 days to regain what you paid for.
Even if you only got 10 FSP per hunt, it would eventually pay itself off nicely.
[*:1zny9j7q]625 FSP ÷ 10 FSP per hunt (w/ full stamina & stamina gains) = 63 hunts.
[*:1zny9j7q]63 hunts * 4.63 days wait between = 291.7 days to regain what you paid for.
If you are an avid, active player.. This upgrade should have no problem paying itself off.
(* is used as a multiplication scale)