@supersavage I'm thinking I might get the Dynamite one instead now, I've found a couple in stock in the UK.
Most reviews on forums say it's good, a few say had problems with it but some have also had issues with the Super Bee failsafe.
Luck of the draw I guess.
No idea why stock levels are so low on the branded 1/5 failsafes, I messaged a few retailers and all had the same reply of been waiting ages for stock.
Thanks for your help people 👍