Buy your kit separately.
Guess you may need training as well.
We would recommend the TS50 HVLP with Helia Gun or the TS20. The TS20 will overheat if you're doing back to back tans so not so good if you are doing a tanning party, nothing worse than your machine cutting out half way through a tan and they can take an hour or so to cool down. So you need to be thinking around £130 to £230 for your entry level kit including a spray tent. If you want to go the extraction booth route you will need be thinking of £1500 to £2500. This equipment is for a busy salon environment.
If I was you I would go for a TS50 and tent set up initially and make sure you get a quality solution, look at the price per tan cost and not the cost per litre.
Always go for a product that uses EcoCert DHA. Drop me a PM if you want details of any of the above.