You can get into
IG for $400. Tanks are $50 each. Buy yourself 8 of them, and you're now the Armoured Battlegroup. Or buy 5 and a Baneblade.
195 - Tank Command Vanquisher, Lascannon, Beast Hunter Shells
195 - Tank Command Vanquisher, Lascannon, Beast Hunter Shells
165 - Leman Russ Battle Tank, Lascannon
165 - Leman Russ Battle Tank, Lascannon
165 - Leman Russ Battle Tank, Lascannon
510 - Shadowsword, Sponsons, Hull Mounted Heavy Bolter
1395 points. Add in sponson options or change the Battle Tanks to other varieties, or change the Shadowsword to a Stormlord if you're feeling uncomfortable about enemy infantry, and you'll easily make 1500 or more.
I would
highly recommend this list as a starter for
IG, actually. You get a baneblade chassis at the start, which is good fun to model and great to play with, and 5 tanks. The two Vanquisher
TC's are really good and won't let you down on the tabletop [also, Tyranids will hate you for them] and the remaining 3 tanks can be whatever type of Leman Russ you like, so building and painting won't be as tedious as painting up 150 troopers at once.
Alternatively, if Blobguard is more your speed, you can buy the Cadian/Catachan Defense Force kit for 165. The CDF gets you a tank, a chimera, a
ccs, 2 infantry sections, and a gun battery. This is a good start, I think, and gets you a 250 point infantry platoon, a 65 point transport, and a 160 point tank. Then you either buy another CDF box, for another platoon and another tank, or just buy a big pile of infantry section boxes. I'd recommend buying 6 of the 5-man boxes, 4 of the 10-man boxes, and 2 of the Heavy Weapons Battery boxes, which allows you to make 58 additional infantry models and 12 heavy weapons teams [you use the trooper boxes to crew the extra heavy weapons]. It totals up to $165+6*$10+4*$30+2*$30, which comes up to $405.
Out of the $405 you get a tank, a chimera, 6 squads of heavy guns, a
CCS, 6 infantry sections, and 2
PCS's, which comes up to being around 1300 points.
130 -
CCS, Chimera, Vox
40 -
PCS, Vox
55 - Rifles, Vox
55 - Rifles, Vox
55 - Rifles, Vox
105 - Lascannon Battery
105 - Lascannon Battery
105 - Lascannon Battery
40 -
PCS, Vox
55 - Rifles, Vox
55 - Rifles, Vox
55 - Rifles, Vox
90 - Missile Battery
90 - Missile Battery
90 - Missile Battery
160 - Leman Russ Battle Tank, Lascannon
1285 points. Add in upgrades as you see fit.
If you want to run Chimera Vets, they sell the Armoured Fist box for $55, and you can start with the CDF again, then buy a stack of
AF boxes up to the $400. The problem is that you're going to have a hard time finding meltaguns if you want to be
WYSIWYG.
I don't think I can work out a Sisters starting force for $400, though.
$80 for Celestine, $80 for ten [6 bolters, 1 superior, 1 meltagun, 1 storm bolter, and 1 simulacrum], $55 for 4 special weapons and a second superior, $60 for an exorcist, and $120 for three Immolators for your troops sets you back $400 and gets you the following list:
200-Celestine
130-5 Battle Sisters w/ 2 Flamers and a Multimelta Immolator
130-5 Battle Sisters w/ 2 Storm Bolters and a Multimelta Immolator
145-5 Dominions w/ 2 Meltaguns and a Multimelta Immolator
130-Exorcist w/ Storm Bolter
Which sets you to 735 points.