1. Look for local animal protection organizations or animal rescues, who may offer low-cost or free veterinary services, or help you find other inexpensive treatments.
2. Find a local pet store or groomer who may offer basic services such as claw or ear trimming, or provide some inexpensive treatment options.
3. Search for cheap or free veterinary services online, such as Veterinarian.com, Pets Online Doctor, etc.
4. Try to find some second hand markets or thrift stores, they may sell some cheap or used pet medical equipment or medicines.
All in all, there are still many ways to treat your cat's ailments despite limited funds. Make sure you try all possibilities and don't take the easy option of comfort. Every cat has a unique value and importance in life, and if you look hard enough, you will always find a solution to your problem.