Call your vet - explain your situation, and ask what can best be done given your limited resources. Just don't act defensive if your vet re-recommends the surgery - he/she is just looking out for what's best for your pet, and don't gripe about prices or expect freebies (not implying that you would, but some clients do, and it's the wrong move). Call around for opinions. If it's any consolation, I've seen lots of hematomas that healed w/out surgical intervention b/c the clients couldn't afford it - but the ear sure isn't pretty afterwards. I would imagine at this point your biggest problem would be secondary infection of the hematoma itself (although I'm no vet) - I'd keep it as clean as possible w/just some soap and water (wouldn't use anything else unless otherwise instructed), but I'd do my best not to fiddle with it too much, otherwise you may inadvertently destroy tissue that's trying to heal. There's also a fine line w/the use of anti-inflammatories when something is trying to heal - best call your vet.