I use Unity Pro for a couple of years now, i've learned a lot about the engine and have done some commercial projects mostly archviz, and i'm doing a mobile game now. I have Pro for PC, MAC, etc... for $1500, and the free versions of the Android and iOS extensions (which are $1500 each), so far i'm publishing with the free mobile version, the drawback is the unity splash screen which is simple (black with the symbol and the logo Unity) no big deal at all, even cool...

Then lets talk about Unity 5 "free". They say its free for anyone to use commercially with no royalties... BUT this time the obligatory splash screen says: made with Unity Personal edition, which automatically makes your product unsellable to any potential client, sponsor, or end user... even if i upgrade my 4.5 license for $750, i have to pay $3000 more to avoid looking like a fuckin amateur.