I have half a dozen or so old pellet catchers that I pulled out of the old Wembley Rifle Club before it was pulled down. They are heavy guage aluminium, nothing fancy, just square but deep, about 1.5" with slots either side to hold the target and two keyholes in the back to hang, £20 each but the postage will be expensive. I'll try and take some pictures later but be patient as they are buried under loads of gear in the garage. I also have a modern bell target that I had built for me by a guy on here a couple of years ago, never used it so it's as new. Just want my money back for this one, I think it was £65 can't remember.
Remember, it is the strongest character that God gives the most challenges.