To expect a repair at no cost to myself?

[Fedupofplaystation]

I may well BU as the purchase was 2.5 years ago.

I purchased an expensive extended rear facing car seat 2.5 years ago.

It has been in and out of the car only twice (as it's huge) since it was purchased and so has not had to endure much wear and tear. I removed the cover for washing for the first time today, carefully following the instructions in the manual, and noticed that one side of the polystyrene was completely detached from the plastic.

Although the purchase was 2.5 years, with the expense, I was hoping that it would last until my daughter grew out of it.

The retailer that I bought it from is now closed so I contacted the company directly.

They will do the repairs, but it will cost me £75 for the repairs and I need to adequately box the huge thing myself.

WIBU to ask them to absorb this cost, as the product was obviously faulty to have fallen apart with such little wear and tear?

Is it a Besafe izi combi? I have one of those and with lifting DS, and him climbing, in and out the polystyrene to the side of the seat has been hit and leaned on repeatedly and has cracked/broken. I spent over £400 on it and it's only lasted 2 years but I think the damage is wear and tear (even if it could have been designed a bit better). This is spot on with the make, price and damage.

I wonder if this is a common problem with this seat then. Doesn't really seem worth the initial price to me.