If you don't mind a 90%-as-good solution for your bed (for 50% of the cost!), I just bought a couple new beds:
https://forums.anandtech.com/threads/my-bed-in-a-box-was-just-delivered.2444274/page-3#post-38543228
The top online brands right now (for bed-in-a-box) are ones like Casper, Leesa, etc., which for a Queen size, all go for around $800-ish, depending on the sales, discount codes, and gift cards being offered at the time. However, there are some beds that are almost as good for like half the price...complete with frames & sheets. Suggestions:
1. Bed frame: Zinus 14" or 18", depending on how much storage you want underneath. The 18" is awesome because you can store a bunch of crap in bins underneath. A little bit higher to get into bed tho. Running start helps

You will also need a non-skid pad (see thread, ~$30 for a King-sized anti-skid sheet) because these are metal frames that allow the mattress to slide otherwise. They are very supportive & don't need a box spring. Also, super easy for one person to assemble. I had my Queen frame built by myself in about 10 minutes...it folds down, has a couple locking levers, and a couple pieces to screw the split frames together. The most expensive model (18" King-sized) is only $140, no joke.
2. Mattress: I'm a fan of memory foam, VERY comfy. The Zinus Green Tea memory foam mattress that I got is also super budget-friendly at all sizes...for example, $350 for a King-sized. It was a little firm for my tastes, so I picked up a 3" gel topper. That's a bit squishy for my tastes; I have a 2" on a twin bed I have & that's more of the right amount of softness for me. A King-sized 3" gel topper is $95. So assuming you're going big, $140 for the frame, $30 for the no-skid pad, $350 for the mattress, $95 for the topper = $615. Frame, non-skid pad, 12" foam mattress, and 3" gel topper for nearly $200 less than just an online mattress...pretty good deal! I have a Bob's Discount memory foam bed, which is more on-par with the Casper & Leesa, and again, I would say this setup is like 90% as good...for a ton less.
3. Sheets: Mellanni has nice sheets (in various colors) for $33 a set (I like them better than the Amazon Basics ones). You should also absolutely buy a waterproof fitted sheet because liquids stay in foam mattresses forever & are impossible to get out. Malouf & Lucid both offer good covers (it goes right on top of your mattress, then you put your regular sheets on like normal...and no, they don't make any noise like the old plastic "wet your bed as a kid" protectors did). Those go from $35 to $50 a pop. I recommend getting a pair of each (put the second set on while you're washing your first set, or if someone gets sick in bed, you'll have clean emergency sheets available). On the high side, $166 for 2 sets of sheets & waterproof protectors (note that those are machine-washable too!).
4. Misc.: You'll need a blanket, some pillows, etc. Nova Duvet has a duvet (blanket) cover that looks like a folded sheet, so all you have to do is toss it on your bed & it already looks like you made it - pretty class (it's expensive tho). Nest Pillows makes really good pillows (memory foam strands or something), although those are $99/ea (I've been through a ton of pillows & those, while being the most money I've ever spent on pillows, are working pretty well so far...I'll update that other thread in a few weeks once I've had more time with them).
But yeah...quick addition says $781 for:
- 18" King frame & non-skid pad
- 12" King foam mattress & 3" gel topper
- (2) sets of sheets & waterproof sheets
Also, the mattress arrives in a box, vacuum-sealed. You slice open the packaging & let it decompress for a day or two to full size & voila, a nice comfy bed. I would try out the bed before ordering a gel topper to see if the firmness suits you or not. They also sell other beds (pillowtop etc.) for pretty reasonable prices. No having to go to a mattress store, no spending $500+ for a mattress locally or $800+ for an online model, etc.