Quip talked about how many users they had in a Recode article from Oct 2015 [1]:

> Taylor said Quip has millions of individual users and 30,000 business customers, though not all of those are paying.

So to do some back of a napkin math if they had 15,000 paying customers (50% of their noted business userbase) how much would they make in revenue? I've distributed the numbers across different levels of SaaS monthly bills because most customers will pay for the cheaper packages.

    75% (11250 customers) *  5x users =  $30/m = $337,500/month
    15%  (2250 customers) *  7x users =  $50/m = $112,500/month
    10%  (1500 customers) * 10x users =  $70/m = $105,000/month
    5%    (750 customers) * 25x users = $230/m = $172,500/month
                            Estimated Revenue:   $727,500/month 
                                             or  $8,730,000/year

(these buckets of average users could be much much bigger (100's of users) on the higher end if they have enterprise customers but I'm being purposefully modest)

[1] http://www.recode.net/2015/10/15/11619612/bret-taylors-quip-...