A few different ways depending on what's available now compared to the last time I looked.
You can go to Solarblvd.com and get a good sized panel for $150 + shipping (to me $60). A Eco-worthy 20a MPPT charge controller is $102 shipped. My set of 25ft solar cables with MC4 connectors was $32 shipped. That leaves the run from the battery to the controller which is variable to your needs.
You can get 100w portable kits on ebay for $200 or less shipped, get two they are small.
Solarblvd also has a 160w folding kit for $269, not quite 200w but not $400 either.
lastly, check local shops or craigslist for your panels. My 220w and 230w panels were $50 each.