As Mighty mentioned, nothing here worth buying.
A few items that should be reduced,
Holy Water Vials - Since the change to include a 0.01 growth increase almost all of my rebirths (12+ and counting) have been just that, 0.01 . This reduction in efficiency warrants a price reduction. Otherwise you're just admitting that the change to these was meant to cheat your supporters.
Gold Medal Chest - Once 499 gold is now 999. Fortifying an item from clean to +7 can take anywhere from 7-140 (140 being the highest I've ever gotten) gems due to its random nature and in my experience it seems to lean towards the higher, thus requiring a large amount per item. Having to spend $10 every time I wish to upgrade a Lv.80 item is ridiculous, even $5 was too much but bearable, instead of increasing at 499 it should have been lowered.
Bottom Talismans - The randomness involved make the current price for this unbearable, I've spent $20 in Adv. Bottom Tali. just to go from 9 to 10.
Jadites - I remember when these were first announced, it was made to seem like a cool new item to aid in the hiring of epic heroes! only to be discovered that they were mandatory, locking your hero out from further persuasion unless one was bought, at 200 gold a piece this is too much. If you're going to steal my money at least be a bit subtle about it like with the Holy water vials.
Pearl chests - no idea why those are so highly priced, $50 for 500 persuasion points...really?