When it comes to legal agreements, I'd be skeptical of any advice that doesn't come from a lawyer!
But I totally get that the expense could be way too high when starting out. The first place I would check is Google, and there seems to be a ton of resources there:
Was there something you didn't like in those results? I saw about 5 million ads for free sample agreements, but didn't check them, and I know they likely need to be customized for your particular situation.
This is an accepted solution.
Makes sense :)
It might be worth posting to a broader forum - like the general forum. Also, people on FB Shopify groups are a bit more chatty, so you might be able to find more advice on one of those. My guess would be that those Google results are going to be about the same as any recommendation, but who knows!