Cheap yet good quality equipment?
Mma training would require a personal trainer of some sort or YouTube can be your friend. There are some Mma training centres which do pick up a fighter who is dedicated and train him free of cost try looking for that. Sorry for the comment not being much helpful
Trainers to run is one of the most important to build stamina and lung capacity...
A hessian sack full of old clothes/rags tired tight makes a good punch/grapple bag if you can make it long enough.
Rope over a beam tied to a milk/juice crate with bricks in makes a perfect cable system and endless workouts....i did this one 25 years ago as a kid after watching rocky!
Anything with weight to it can be used as dumbbells...milk bottles full of water, bits of steel, logs, bricks etc.
Find a partner who will wrestle with you and train with you.
Train as hard as you can...even harder than you think you can train and you will achieve what you want.