I don't want to get a range extender because my router sucks so I just need to buy a new one. I don't feel like doing a bunch of research and will probably get one this weekend.
Your going to find the best price for routers online. The asus n66 has really good range but its price is more mid/upper range at around 100 for a refurb or 130 new.
If you don't have any ac devices. I'd just get an N router for now. The prices are constantly dropping. And with AD coming out sometime next year. AC routers are going to drop like a rock.
If you have T-Mobile service, you can lease (or buy?) their Personal Cellspot for $25.00. Not sure of the fine print, but is a tremendous deal for a highly-reviewed router.