srry to say dude
but u cant only get stones with $$
u can get from cooon event and other town quests
as for silver keys
ppl do buy that many silver keys
im from pandu and been playing 3years now
and my freind bought alot of silver keys
good thin he got out of it
is he got a demon armour and other rares
so..idk if this will answer your question
and ther is a bot but im sure its detected by now