I fit quite a few curtain tracks and rails, along with curtains, because youre up a ladder can you just hang the curtains, whikle i make a cup of tea quip.
Dunelm is cheap for tracks and rods as is Screwfix, and lots of cheap places for nice curtains, like Dunelm and the factory curtain shops.
Remember curtains are open most of the day so you dont see them, and at night the lining is inside so you juast see the lining and the pattern side is facing the dark street.
Shop around and spend the spare cash on food for a food bank locally