I know what it's like rc'ing on a budget so here are a couple tips/tricks I've found saved me money
1: learn to reinforce your body, specially the front/rear bumpers, any sharp corners and body post locations. Drywall tape and shoe goo work great. Makes your body's last a lot longer.
2: gorilla tape or shoe goo and drywall tape the inside of your tires (specially for 3s use) stops ballooning and uneven tire wear which makes them last a lot longer. I've had to toss a lot of tires that tore in the middle of the thread from baldness but the shoulders were almost brand new.
3: maintenance, keep your Rc clean (or as clean as you can. Specially bearings and electronics. This is even more true if you bash in the wet. Nothing is water proof only resistant, your bearings and battery/etc connectors are not at all waterproof, not to mention the screws. Keep it clean and dry and avoid repairs.
4:TX battery's, if you Rc a lot your best money saver is going to be rechargeable eneloops. If you rarely bash copper tops will work fine. There's nothing worse than realizing you have a 30 minute to bash only to find you forgot to charge your AAs.
5. Terrain specific tires. Use your dirt tires only on dirt they will last for ever. No matter how tempting it will be to rip across a parking lot on the way back to your car.
6.lipo care, I've killed about $500 worth of lipos by forgetting to bring them up to storage voltage after a bash session. I check on them months later to find a dead cell, don't be like me. After a run charge them to 3.8 per cell for long (unknown amount of time) storage. Lipos advertise 500 cycles and you can get there but only if you treat them properly. Also don't store them fully charged for extended periods.
7: ram parts resist breaking because they flex, keep that trade off in mind.
And last but not least, strengthen your Google kunfu. There are tons of great budget brands with a bad stigma, don't let a couple bad reviews Sway you away, do your research and know you get what you pay for. A lot of people give these companys a lot of undeserved flack when they paid $10 but expected it to be as good as its $25 name brand counter part. I've destroyed strc axle carriers just as easily as I did a pair of Integy ones. Some crashes will destroy a part no matter what brand it is.
Suprasales, Integy, duratrax, picket SC, and a few others have some good budget products
"The predator lives alone, he accepts this reality as the cost for his existence "