Make your own wire connecotrs cheaply, ever price a simple two wire plug for a project your working on, for the price of a single store bought plug you can make 10 or more for only pennys.
This is a simple male female plug that can be polerised or reversable depending on how it is assembled, It uses the .112 push on crimp connectors, male/female, or in any combonation.
Remove plastic insulator and solder the wire directly into the barrel end of the connector, makeing sure not to over fill the barrel with solder or alter its shape, DO NOT CRIMP. Insert each pin in one half of the printed wire connecotr and apply glue, cover with second half and press together.