[@ScreenAcne] depends on what you want! Potions can cause some fun effects, Gambler's Den is the only way to get artefacts right now, Market has unique items, blacksmith grant weapons/armour, menagerie means pets, disenchanter you don't need yet, wishing well can help you get things you want in future, Doctor has some unique items, library grants mission knowledge, museum will allow you to identify artefacts better, Training Grounds will grant a bounty and loadout XP, fortune teller is mysterious :3

[@Jorik]: 
Costs 270g in total. Leaving you with 55g left :D
[b]Cryptograph:[/b] You examine the Cryptograph, realising that you can send [b]Lvl 1 encoded messages[/b] as well as decrpyt them.
[b]Pulsating Purple Stone:[/b] As you examine the Stone, you realise it is a rare Fate Stone. [b]Gain 1 extra Fate Slot while you own this item.[/b]