The cheapest refurbished laptop computers with wireless capability start under 450 dollars. You can usually find a handful of wireless refurbished laptops in the $400 to $450 range and a whole bunch more up to $500. Non-wireless refurbished laptops, that can be converted to wireless via PC card or USB adapter, typically start at around $300. There are cheaper refurbished laptops on the market but wireless compatibilities become questionable as processor speed and system memory decreases. If you are going to buy a non-wireless refurbished laptop computer with the intention of adding a wireless PC card or USB wireless adapter, then be sure to compare the system requirements with the refurbished laptop's specifications to verify the items are compatible with each other.
If you don't want to deal with PC cards or USB adapters then be sure to choose a cheap refurbished laptop that already has wireless components integrated. If you would like to go directly to the online