I'm a SAHM, I live off of less than $300/mo...
BUT, hubs does all the budgeting, bill paying, etc. We do our grocery shopping together, he pays. When it comes to clothes and things for the kids, never a question asked, the $ is there... Last week I mentioned I needed some new clothes soon, we went on friday when he got paid and I got everything I needed. We spent maybe $250, but this included stuff for the kids too (can't pass up clearance racks at Old Navy) But that was the first time I really spent $ since I left my job in March to have our son.One other time my friend called about 50% off diapers at a local grocery store, so I went and bought them allll, every size.
I cut coupons and REALLY stretch $, I'm a bargain shopper, if it's not on clearance or absolutely necessary, I won't get it.
Last grocery bill was $309, after coupons $190... I rarely pay for wipes, baby lotion and baby wash, I get $1 off coupons that double, so for example huggies or johnson & johnson baby wash was 2.99 on sale for 2.19, I paid .19 cents a piece. same with wipes. (i stock up when it's a deal like this)
I'm a home body so I don't spend $.
We only have 1 car so he takes it to work (my mom lives 2 blocks away and has 3 cars, so I can use 1 if I ever need to)
We always make fun that the kids are richer than us, hubs puts $ in their college funds whenever we can plus any $ from grandparents and relatives goes there.
Hubs makes anywhere from $32k-$45k, so some months steak dinners are the norm, sometimes spaghetti is.
SO MY ANSWER IS: yes I could budget $300/month but ONLY if I didn't have to buy groceries with that $.
And I ALWAYS have some cash on me for anything the kids or I may need but I can hold on to $40 for weeks without spending it.