Why do they need 10 person team for $10k budget (actual money spent to bring customers in)? unless these guys are literally going door to door.
P.S. I'm not marketing professional.
The rest of the team works on things like branding, identifying markets/customers, picking price points, running tables at events, writing content, working on the website, researching potential new products, understanding how current users use the products, analyzing web site traffic for insights, etc. At some places things like ui/ux fall under marketing - like making it easier for a user to purchase a product, writing manuals/user guides, etc.
Would suggest that you check out Patrick McKenzie's post about SaaS companies. Buffer fits the 'Low-touch SaaS' description pretty squarely - which would mean that they don't necessarily require a dedicates sales unit.