My Lumia 520's touch screen is broken, How much it will cost in India to replace it (both local and original). I know using local quality will be cheaper then what are the cons of using it. Is it available online ?
You may try searching on eBay for replacement screens. They should not cost a lot. However, this also depends if you just broke the glass or the lcd screen itself, which costs a lot more.
This link gives a detailed overview of which part is broken for you: