you see plague marines? i see a multitude of options... buy multitude i mean 3

with 3 easy to build plague marines and some bits and too much time with a damn pocket knife and pair of clippers one can create

a Lord of blights

A lord of Plagues

And a putrid blightking

Or just 3 putrid blightkings, with more skill and some green stuff these options could be even better.

Cost of the official models 

Lord of Blights $40 aud

Lord of Plagues $22 aud

Putrid blightkins $18 per model (box of 5 for $40)

our cost $25 plus bits