Btw investors are also going to check your website, and even though they'd try to stay objective and focus on core (team, idea, market blah blah) the appearance

Btw investors are also going to check your website, and even though they'd try to stay objective and focus on core (team, idea, market blah blah) the appearance of website will have at least subconscious effect on their image about your company, and thus on the valuation. In that way "investing" bit more on your website may increase the investment on your company.