If you're sure you're never going to be working with really heavy weight, you can get inexpensive power racks from Amazon and retailers for reasonable prices, including shipping that will do the job. If you look on Amazon, you'll see Chinese made, bolt together racks from Titan, Body Solid (Powerline series), Valor, and TDS for around $300 delivered. You can check to see what they're rated for, but if you aren't planning to squat or bench over 300 pounds, they should last many, many years with reasonable care. For a little more, you can get a rack that will be partly welded together, weigh considerably more, and handle a lot more weight (and maybe be made in the USA, if that's important to you). If the rack will be a lifetime purchase, you might consider spending a few hundred extra for better quality. The issue isn't so much safety as it is "feel" and perhaps ultimately longevity. Very few people lift enough weight to really stress even an inexpensive rack, but a well built, mostly welded rack will feel much more solid while you're using it, especially while doing pullups. If you think you might be moving in a few years, going with the less expensive option might make more sense.
Please don't buy anything without safety bars. Benching and squatting alone without safety bars can be dangerous. When you say "standalone rack," do you mean squat stands? I wouldn't advise them if you're lifting alone. Good ones can cost as much as an inexpensive rack and they don't give you nearly the margin of safety of a power rack. Also, if you're buying a power rack, especially since you mentioned "slim," plan on bolting it into the floor or onto a platform. The smaller power racks especially need this.
I left commercial gyms for my own quality equipment at home about 12 years ago and have never regretted it.
There are a lot of good Black Friday deals out there. Rogue often has free shipping.