This 3mm diameter EL wire is sold per metre. Just order the number of metres you need and you will get one continuous length (if possible).
You will need to drive this with a suitable EL driver, although EL wire will work directly from a 240 to 120 volt step-down transformer with nothing else required, but it will be at its brightest when driven at a frequency of at least 2kHz. Also note that the electrode wires in this (and most EL wires) are very fine and take some skill to connect to.
This wire was an excess stock purchase and when it's gone, it's gone.