$500 monthly budget for marketing is like for a start up, not for big companies like Trezor and Ledger.
I’m not sure that would even be enough - the budget is too small to expect a positive marketing result. Even for a signature campaign, some campaigns are paying over $1,000 per week to make it effective. If the budget’s too low, it’s probably better not to advertise at all; otherwise, it’s just wasted money. And, of course, experienced campaign managers like Hhampuz know this and likely wouldn’t agree to run a campaign with such a limited budget.