blank and sad film

So, I have a 400′ roll of colour film.

Test strip comes out blank.

Processed in known good B&W developer comes out blank (not even edge markings).

Ok. I guess there is something wring with the film. Storage? (ebay purchase)

Last try, take some out into the sunlight. Then pour fresh developer into the tray with the lights on. Remjet wipes off the back, and a blank pink frame emerges from the fix. I hate it when stuff doesn’t turn out. It was cheap though.

What now?