Jedi racing. You can race in up to 3 series (Formula Honda, Monoposto 1200 & BARC Single Seaters) thus taking your pick from up to 30 races per year. Cars can be picked up for around 6-8k. Season can be run for 5k or possibly less.
Easy to work on, good value spares and factory help is SUPERB. Super quick cars as they run bike engines with around 100-150 BHP depending on engine (Sequential shifting and massive revs)
Eg. Formula Zip at brands recently were qualifying around 51 seconds. Formula Honda were qualifying in the low 49's.
and formula zip starts at 25k per year.
Whatever you choose, the important thing is to have FUN
The Jedi Racing Club has just been formed (MSA Approved) and will be running a replacement for formula honda next year. Should be even better value than current race costs.