Silentnight Enrich mattress only in Bensons for Beds

Hi, I wondered if you could help, me and my partner have just bought our first house and are still looking for the best bed to buy. i have been looking and found 1 I liked a lot in Bensons the other day but it was a little out of our price range as buying our first house has used up a lot of money. i liked the Silentnight Enrich divan bed and have contacted silennight to see if they do a similar product so i could try and find cheaper but they just advised that the enrich is designed exclusively for Bensons?!

Me and my partner are both around 12 stone, i am 5'7 and he is 6'0 so looking at the King Size and loved the pocket sprung mattress!!

Thanks .