[Rwmat]

I bought a Scalextric digital track around ten years ago in preparation for my retirement. I now find that the 15 volt. 4 amp transformer is no longer available( can’t even find one on e-bay) does anyone have a suggestion as far as a power 
supply? I have seen adjustable power supplies on Amazon but don’t know if they woul work or how I would connect them to the digital control unit at the track. Appreciate any help.

Wow! Thank you for all of the input. I should have mentioned that this for the U.S.
All of the suggestions are great and I’ll start checking these out. Again, thank for the great answers to my question.