Honest take: keep the $150 in your pocket for now and don't feel like you have to spend it to start.
I made this mistake a few years back — I had a small pot saved up, spent half of it on a domain, hosting and a couple of tools before I'd made a single penny, and then just sat there hoping something would happen. With a small budget, your first money should come from selling your time and skills, not from buying things.
I'd also push back a bit on the accounts-reselling idea. That usually means reselling platform accounts or SaaS seats, and a lot of it violates terms of service. One ban wave and the whole pot is gone — with $150 you don't have the room for that kind of risk.
What actually worked for me: pick one service you can deliver with free or AI-assisted tools (the AI point above has merit — it's a huge lever for delivery speed), spend maybe $20 on a domain for a simple portfolio, and then do free outreach to get your first 2–3 clients. Once you've grown the $150 into $500–1000 through services, then you've got a real seed fund to put into something scalable.
Unsexy truth: with $150, the budget is the least important part. It's the two or three months of outreach that nobody sees that actually makes it work.