My advice is to be realistic.
Set down and make a list of good wholesome foods that will aid you in your diet AND that you like.
It does no good to go out and buy a bunch of stuff that everyone else likes, but you only 'want' to like. That will just demoralize your diet plans by staring you in the face every time you open the fridge and chose something else. I have a friend that LOVES fresh spinach. When we set and watch a movie, I eat my 100 cal popcorn and she eats a bag of fresh spinach leaves. I think that is sooo cool, and I want to like it, but honestly I just hate the stuff. I can get so motivated just setting beside her and watching her nibble, but realistically it would just be a total waste of money for me to go out and buy my own bag of the stuff.
So, my guess is you have a good grasp on the things you like, and sit down and make that list!!
Secondly, don't feel like you have to go to the store and spend the $60. Buy what you want and will use at a reasonable rate. Put the money in a separate envelop and spend out of it when you need to.
Having said all that, I'll give you a quick list of my go-to ideas
Raw almonds. I love them, they last forever, and are crazy healthy. I keep a mini snack ziploc bag of a premeasured serving of them in my purse at all times, so I have a healthy snack when I need it.
Cucumbers and tomatoes. Everything else fresh, I buy when I need it, but those two I eat all the time. I cut them up and put some real mayo in them for a big fresh summer salad that is a HUGE bowl and only has 100 calories! Add salt and pepper and you are set.
Kashi almond bars. Not exactly 'cheap' at $3.50 for 6 of them, but they are life savers to me, and are one of the few bars that I actually feel are worth the money.
Black tea. I drink it all the time.
I wish you the best!