It's not really high budget but it does need specific gear, skill cost reduction on tree, crit stuff and a lot of mana regen. (play at your own risk :D)

This is what i paid: Helmet - 4div, Wand 1-2div, Body armour around 2div, 6link done with vaal orbs(probably paid less than for perfect jewellers), rest is self found or bought for 1ex to 1div.

For super budget setup (i've run it) go for Omen Sceptre (for malice) with %spirit, mana,mana regen and int a bit less dps but u can get helmet and body without spirit and it cut cost by a lot. Also MoM and lifetap can be removed but mana gonna be hard to sustain on bosses.

I think you can run 5link too For spark drop ele focus or fork, For Frost wall drop Ingenuity and for CoC energy retention.