Plus hey wash amazing where as the cheap ones (as my friend found out) from h&m ect after a few washes can go really thin. Quality will last and can be packed away for another future baby or sold on eBay too.
These packs of baby grows from the supermarket or H&M look so cute and gorgeous in the packet and the price tag is amazing..there is a reason for this. They are cheaply made, often unethical, and wash really badly, they are throw away often and it's unlikely you will keep them or be able to sell them on too.
It's hard to budget with limited funds I'm totally understanding of that, but a few quality items will benefit you and save you money in the long run.
I have nearly everything second hand and have all the best products on the market, one of the best car seats, a mountain buggy swift travel system (the buggy part was £35 pounds on gumtree, the carry cot £30, car seat and isofix £50, this system is like 800 pounds new
), an ergo baby sling, a medela electric breast pump (35 pouns) a snuz pod (40 pounds with the little green sheep mattress) all second hand but can be washed, sanitized, cleaned to perfection.
I am a student with absolutely no money and as I have brought early, from about 28 weeks, I have accumulated everything I need, and want, at a fraction of the price 
You can have what you want too @Ann9456 you don't have to settle for cheap crap that breaks or doesn't function properly.
There are always staples that are very reasonable, i.e muslins can literally just be the cheapest you can find, just one of those 5 pound baby cloth things stretched over wire (they sell at mothercare) but I would especially advise getting your buggy second hand.
Some people are so loaded they have like 2 or 3 and you can benefit from this. It does take a lot of looking though I must say, and it definitely helps if your in a city for collecting things