Hi,
We got a shower cubicle from Ardy Bricolage near to Carrefours in Torrevieja - as I think a few people are finding the tray is smaller than the average and therefore finding the right size unit isn't easy, anyway we did and though not in stock they will deliver. We were told it would be 2 weeks but within 5 days we got a call and delivered.
Will say that it wasn't easy to fit though - good luck!
IanT