I bought a mattress online. I read somewhere that people who buy mattress that they have tried out in store aren't more satisfied than people who buy one online sight unseen - lying on it in the store doesn't really tell you what it's going to be like sleeping on it long term. So I just went for it because the price was right. Turns out I'm happy with my the mattress.

Pillows are pretty much all the same to me and are replaced regularly so I'll buy those online if there's a sale.