Getting started can be a little financially daunting. It was a month or two before my grocery budget went back to normal after buying all the 'necessary' things and finding what worked for me and what didn't. I wasted a lot of money on stuff I wound up not using or not liking. I buy almost all of my meat, cheese/dairy, nuts, chia and flax seed, oil, and basically anything I can find at Aldi. If you have one near you, check them out. I get almond and coconut flour, low carb tortillas, grated cheese in big bags, flaxseed "low carb" bread, and other random things at Walmart. Skippy natural PB and 70%+ dark chocolate have become necessities. LoL.
If you're willing to cook and experiment, there are some really great recipes out there. I do an almond/flax meal biscuit in a mug with a veggie sausage patty for breakfast twice a week. There's a great chia seed and flax hot cereal recipe that's really filling and full of great stuff like fiber and antioxidants. I used to make a lot of coconut/almond flour muffins (especially pumpkin and cream cheese over the holidays) but school kinda killed that for me.
Most nights, dinner for us is usually some meat and California blend frozen veggies baked with olive oil and sea salt. The kid loves the cauliflower, I get all the broccoli, and we share the carrots. LoL. That was the key for me was finding what we liked, worked, and didn't take too much time and effort to prepare. Fortunately, neither of us get bored with food.
Hang in there if you're liking it and you feel good doing it. It'll normalize. It's an eating style that works really well for some people and not for others, but in the end that's what you have to remember...it's a way of eating more than a 'diet'.