It becomes far cheaper with Daz studio and freestuff items . If you can paint then making your own textures and transparency maps expands your existing models a lot.  Several paint programs free. There are even free modelling programs if you want to make some simple props.

Join Daz platinum club and buy stuff at $1.99 .

For the amount of money I spend and the time I can occupy with it , its not that expensive a hobby.

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Go bunny , take over the world .  Bwahahahaa
;)