I need to get a new sofa as mine is uncomfortable

I’m tall and I want one with deep base cushions. I find most sofas are too upright and my arse is always perched on the edge of the seat.

So it needs to have big base cushions so I’m not perched on the edge and be good for slouching and not fall to pieces in a years time and not cost the price of a small car (skint so it will be a gift from generous parents recent payout)

ebay for a second-hand Tetrad Eastwood or similar.