Third customer, MemberStack. Now what?

Memberstack just got out the last spot of our 3 slots launch campaign.
My intention was to raise the price by $50 after the 3 spots (making only a 50% discount on the banner) but I've talked with Bubble early today and they were interested.
So, I've decided to extend the promo for them for another 24h and I've sent them an email explaining.
This way I don't feel like I'm taking advantage of them or being greedy.
I believe that is more important to give a chance to the customer and keep a relationship rather than getting an extra $ right now.