I really like this sofa. This company changed the name but it’s the same one I purchased and it seems to be very well made. The manufacturer is Klaussner furniture and they have different styles. You can find all the ones they make on JossandMain by typing in Klaussner into the search. JossandMain is a Wayfair company but less expensive. The price has come down since I purchased it and now they allow you to customize the color which wasn’t an option at the time. It didn’t matter since I wanted the plain off white one anyways. The cushions are firm and keep their shape well but still comfortable. The back pillows are down so they are squishy but still look put together. The fabric is a heavy linen and not cheap. Here is a photo from the holidays for an idea of it. It was around $2600 but would have been double that at Pottery Barn so although it’s not as cheap as IKEA it seems to be as well made as Pottery Barn but less expensive. The slipcover is removable and can be machine washed. I actually looked at the Pottery Barn basic sofas before buying this one and the fabric seems to be just as nice if not better. Here is the link to this sofa. https://www.jossandmain.com/furniture/pdp/felicity-sectional-cstm1465.html

I’ve had custom furniture made before, and I agree that it’s not necessarily more expensive, and it’s a great option. I think it’s a much riskier undertaking with a sofa however. Subtle variations can make a huge difference in both looks and comfort. I think it’s fine if you see a sofa you can try out and examine and then just make it a bit longer or whatever. But cobbling together a custom sofa from, say pictures, is risky in my opinion.

Thanks to everyone who commented! I am going to look into your suggestions! As Sabrina Alfin said, we don't own a home right now, so this is part of the reason why we don't want to spend so much on a sofa. I found some interesting ones on CB, RB, and PB but I got nervous after reading some reviews claiming that sofas from these brands became awful after only a year of moderate use (I read a couple of these on houzz). And there's also the feather situation. Anyways, thanks again!

https://www.houzz.com/discussions/4673198/best-sofa-king-hickory-bassett-taylor-king-craftmaster-mayo