Turnigy and Frsky do very reasonable 6 channel sets for less than £50. I have both and have no problems with either. Look at the Hobbyking web site to see them.
Peter.

Hi
Greetings from SA. I use a Flysky i6. Expandable to 10 Channels 2.4Ghz and have had no problem😊😊

Hi Caretaker,

Howes in the UK are pretty good price wise, I've included the link to the volantex 6 channel set that I've just bought and waiting for the postie to deliver 😊, you get a lot for your money and there's not a lot of difference in price between this and the 2 channel sets, plus you get a 7 channel receiver with this as well. My main reason for going for a 6 channel set is that like yourself I'm just starting off and I want to future proof my purchase by having as many options as I can
Bill
https://howesmodels.co.uk/product/volantex-exmitter-2-4ghz-6-channel-radio/

Bill