You can started alot cheaper than that to make sure you want to stick with it.You can get small bottles of nic,pg,and vg very cheap,a few sample size bottles of flavors at around $1.50 each,a couple syringes and a few empty bottles and your good to go.When i first started my initial investment was $60 shipping included.Yah, my only issue is the cost to start.
I want to make recipes like
strawberry shortcake
Blueberry cheesecake
Orange sherbet
But I know it's a trial and error. So, it looks like $100 is a good "start up" cost...