It's been about two months using Logos.
I began with Platinum Standard, and I bought NIC and ZECNT last March when they were on sale, with some other commentaries I need.
And this May sale on good individual commentaries seems really great to me.
But I've spent too much money on Logos resources (which is well-deserved, I think), so I should try not to be too hasty this time.
I know that NAC set and NIVAC set are often offered at a hugely discounted price, but I'm not sure for individual commentaries of those series.
Do they sometimes offer something like 50% promotion sale for individual volumes of NAC or NIVAC?
If so, I'll skip some NAC NIVAC volumes this time for later purchase (but still, a lot to buy).