As the customer of Codecanyon mentioned above, & also of SevenSpark, I thought I'd give you my fair comment on multiple licences.
But firstly, having been in business a fair few years, our business credo: 'Ask the customer what they want, then give it to them, as fast as we can.'
That should be everyone's credo these digital days. Especially since there's always another hundred equally talented coders/programmers/developers/affiliates around the corner getting ready to do it faster than you & me.
My hat's off to Chris Mavricos at SevenSpark for a great WP Menu plugin & support service. However, let me put this into Customer Perspective >>
As my partner & I , a micro-business, launch our 480-odd affiliate-based online retail product stores over the coming 12 months, we've got much better ways to spend our time-cost — than logging in to buy a few UberMenu licences at a time. Especially paying 'through the nose' because your company possibly sees it as too complex to multi-license or too much short-term income lost from customers bulk-buying licences.
480 Wordpress + Datafeedr-driven websites using UberMenu = US$6720 overall cost. That's what we'll be paying — just for a fancy menu plugin (no offence, Chris). Might as well pay a coder to develop our own custom version to justify that sort of budget spend, folks!
Since Chris M. & I discussed your licensing policy, & having done the sums myself, I've seriously googled this week for comprehensive WP menu plugin alternatives, & it's looking very good, believe me.
And of course, my business partner/wife okays ALL expenditures. She'd prefer to see me spend workhours searching, testing & implementing a fairer solution (say, $100—$200 for Unlimited Licences) than what we're looking at right now through a limited/out-of-date (no offence, CY) CodeCanyon's purchasing/licensing system.
I suggest you have a squizz at PremiumPress's powerful store-building theme packages for an example of a truly workable licensing policy. It sells very nicely. After buying the basic $79 ShopperPress package, we went & bought the full VIP Collection Pack for US$249 Unlimited Websites (that we develop, not for resale, how easy's that?).
Try this URL: http://www.premiumpress.com/club for $249 (then $70 Rebate for existing customers, wow!)
If I had your business, I'd be saying, "Heck, yeah! Sell 'em more. Sell 'em faster. Multi-licence packs, hooray!"
Like I said earlier, "Ask the customer..."
Anyway, I, & all your other customers yet to be, look forward to your solution soon.