I don't know your definition of cheap, but I'm currently running H&R Sport springs with Bilstein Sport shocks on my 2004 FWD sedan. It dropped about 2" all around, it's sitting at 13" from fender to center of wheel. It's low enough for me, and there are some speed bumps around me that I can scrape if not careful. Before this I had FK Streetlines, but sold those to a buddy here since I wanted something stiffer and didn't need to adjust height. I was fortunate enough that I didn't lose much money on the transaction, but I still did the work multiple times, and my times means something to me, so in my mind I should have gotten what I wanted the first time. I installed the coilovers, then swapped the stock back in, then later swapped my current set up on. A lot of work if you're not getting paid for it, but I was able to do it. Bottom line, figure out how low you want to go and find the best solution you can afford and begin saving and planning for it. You'll need some tools for the job unless you're paying someone else, then you need to budget for that as well.
To help, FK Streetlines I paid about $530 or something with delivery, for the H&R/Bilstein setup I think I paid about $700.