Solid plastic plug plant trays

Hi I am looking for some of these, I am feed up with the thin ones as they don't seem to last very long.

I had a solid one a good few years ago and it has been misplaced or nicked, does anyone know where I can get some from please.

I have been looking on the net for a while now and cant find any.

That's the ones Goosegirl.

I bought from these people (www.plantcell.co.uk) a number of years ago. You have to buy a case but they last and last.