I'm glad we can help, but also sorry you are having such a struggle!
Don't feel bad about eating cooked foods. That happens to most of us. I had some twice this week, once by mental choice as we were eating at a fancy restaurant, another time by physical need because, during traveling, I got so nutritionally out of balance my body was screaming for beef, cheese and avocado. And a lot of people aren't 100% anyway. Lots of people stay around 70, 80, 90%.
Let's talk about how you can feel full and stay committed to raw.
I personally cannot ever feel full on fruit. In fact, most fruits make my blood sugar so wonky (a high from the sugar followed by a crash), I'm pretty, well, let's just say messed up, eating fruits. I wonder if you'd feel more full eating vegetables. (Although I did read someone say she puts avocado in her morning fruit smoothies as it helps keep her full through to lunch.)
I am finding I do very well on any kind of berry, with occasional citrus (not including the small amount of lemon or lime juice squeezed in for salad dressings), and do very poorly on bananas and grapes. (I'm not sure about the rest as I'm only starting my experiments.)
Most vegetables are pretty inexpensive. I eat a lot of salads, mostly different kinds of lettuce, spinach, celery, tomatoes, things like that. I feel pretty full from that. Now, we do need fats to feel full, so I do add avocado which is a bit expensive, as are nuts and seeds - but getting them in bulk reduces the overall cost, and then you don't need to eat that much each day.
Also, I was wondering if your family eats vegetables. If they do, it would be pretty easy to eat raw what they are eating cooked.
I'm also wondering if you could help them out by making the salads for dinner, for instance, a big salad for you, small side salads for them, or perhaps other veggies. If it's something for everyone, even if you steam up some broccoli for them, raw for you, perhaps it'll make it easier for your family.
Do you have a yard? We get a lot of our produce from our own garden. There are ways to make it very easy to maintain and grow a lot in a small space, and I'd be happy to talk about that with you - and you can get year-round produce, even in winter, with an inexpensive make-shift greenhouse.
Do you have a farmer's market nearby? That's a good way to get less expensive produce too.
I just wanted to say also that I do practically no dehydrated food, use very few prepackaged products, and nearly exclusively eat veggies, with a few nuts, seeds, oils, and even less fruit thrown in. I feel full every day, and while I ate a lot when I got started, I eat a lot less now - far less food than I ever ate before. (Where even doing raw I was about 1600 calories a day, I'm more like 1100 calories now, feel great, feel full, and am thriving.)
Frankly, I mostly eat leafy greens, and have heard (and now experienced) that one can feel supremely wonderful eating a lot of leafy greens (most people suggest at least 50% of the diet being a mix of leafy greens) and those are both yummy and inexpensive! Breakfast, lunch and dinner - a salad with leafy greens and some other veggies like tomatoes, broccoli, onions, bell pepper, etc., some salad dressing, a little bit of seeds, and I'm good to go!
(I do vary my salad types for variety, spinach & arugula for breakfast, kale, romaine, all kinds of other leafy greens & veggies for lunch, dandelion, romaine, parsley and pine nuts for dinner, each with a different salad dressing, that's my general day.)
FWIW, I read a book that talks about how to do warmed food without a dehydrator. One person has an electric skillet with a temperature control. By keeping the temperature low, she can warm things through without killing the enzymes.
Another person used the oven on the lowest setting, keeping the door slightly ajar to warm things through. I actually did this to make tortillas as my round deyhdrator, with that big hole in the center of the trays, made it impossible to make decent sized tortillas. I used a pizza pan (lightly brushed with oil) and put it in an oven on the warm setting with the door ajar (you can use a wad of aluminum foil or something like a wine cork), flipped the tortilla, then turned the oven off for the remainder of the time, and the tortillas came out GREAT.
I don't know how much time you have before your trip, but considering your commitment to raw I think it would be worthwhile to check out all your local thrift stores for dehydrators, (or juicers or electric griddles or blenders) as well as searching online like
www.freecycle.org and
www.craigslist.org.
Seriously, you're EXACTLY the type of person I want to gift my dehydrator to when we get our Excalibur, someone who is committed, passionate about raw, who would make good use of it, and who doesn't have the funds to get a higher-end model. Surely there are other people who feel the same. I really DID get my dehydrator for $3.00. It's possible.
I would also suggest putting up a "wanted" sign at your local health food stores and markets, anyplace like that where you can connect with like-minded people. It's very common for people to start off with something inexpensive, find their passion for it and upgrade (or decide they're done with it and get rid of it), and want to sell their item at a discount.