I have a power supply for DL LEDs that went toes up. Local supply house wants $85. Retired old guy markup, I’m sure but I can’t seem to find them at all online. Suggestions as to where?
That's not a ballast. That's a power block with a very common voltage. Dig the bins at Goodwill and you'll most likely find an adequate one.
Cut the cord off with about a foot left and bring it into the store to match ends.