1x Lord of Change conversion 260
1x Changeling 140
1x Herald of Tzeentch on foot 120
1x Herald of Tzeentch on Chariot 200
1x Herald of Tzeentch on Disc 120
3x Exalted Flamers of Tzeentch on Chariots 480
1x Blue Scribes 120
6x Screamers 280
30x Pink Horrors 420
OR Tzeentch Arcanites, read on...
30x Tzaangors as warriors of chaos 540
1x Gaunt Summoner 120
30x Kairic Acolytes as chaos marauders of Tzeentch 180
2x Warshrine of Tzeentch based on Tzeench Chariot models 400
With models included I could create either or both of these armies (for $1500-2300 each) as a personal project and finish completely within four weeks.