(SLiC posted a referral code for 20%).
Also if you sign up to the email list, you get 10 credits, which is €10 (I think you can use them together?). These are available for new customers. There's also special discounts for people with MPowerSynth I believe.
I have to say, I'm new to Melda and I'm currently doing MSF for the One Synth Challenge and it's an incredible synth, maybe one of the most powerful synths for sound design (sort of like Zebra2 on steroids and without the module count restrictions). The UI/workflow does take a little getting used to, but if you watch some of the Chandler Guitar videos I figured it out in one evening and that's without reading the manual.
It might be the synth that took me by surprise the most so far this year!
But it's definitely not for everybody, I know this because in the OSC some people favour the one page synths and skip these synth monstrosities
(my favourite one page synth is Hive2, which is probably a better choice if you don't want an uber synth).
Since it's still in Beta features are being added, the big one is sampler support! For the intro price for me it's a no brainer, but I like complex synths it seems.