I should probably stay away from this thread too, because I shudder to think what my annual budget is. Thousands I would estimate.
I don't really have a budget per se, I just try to buy everything as soon as I see it on the shelves. Around here if you blink it could be gone and never seen again. Sometimes it can be a real pain to juggle the $$$, but I can usually find a way to make it work. Just this past week I had to dump most of my TVC Wave 1 figures just so I could scrape up the cash to buy the new TCW Slave 1.
I really wanted to get all the new vintage stuff, even the vehicles, but the cost, and moreso the space considerations, dictate otherwise.
On the plus side, my REAL vintage collection is nearly complete, so I won't have to siphon money off for that much longer.