I know about being on a budget. Go to Walmart and go into the camping section and buy yourself 2 of those emergency blankets for right at $2 each. They are a good size and reflective, that's what I use. I was given some plastic bookshelves and adapted them to be my tent. As the plants grew, I cut out shelves, leaving the outer frame for strength. I got some small clamp lights for my cfl lights that I added to the led lights at Home Depot, the small one was cheaper, but I've seen people use the larger ones and use a multi bulb adapter to add more light. I got my little fan at a thrift store for a couple of bucks,
I went online to Ebay and ordered lights as I could afford them. I'm still under a budget and still strapped for cash, but every time I get an extra few dollars I get what I need. One piece at a time and now on my second grow, I'm okay except that I need more lights, larger pots and kindsoil for my next grow. I will continue to find deals and buy when I can before I get my third grow ready. I need to expand the size of my tent so I will work on that. My biggest expense is going to be the seeds....
It will all come together eventually, just hang in there like a hair in a biscuit!!
One of our illustrious members likes to say that patience is a virgin, and it is. Be patient and good things will happen.