I agree with that Blesta would not bother releasing an Official module when there is one already done, specially, when they have more prioritized/important features/plugins to think of.
As for the pricing of our module, not sure if it is allowed in this forum to talk about our own pricing, but anyways, i would agree that the owned price might not fit with everyone, thats why we have a monthly license, not sure how a $6.99 per month can be considered a high price.
As licensecart said, in addition to, not stating leaves the door open for others to assume which module you're talking about, since searching the Blesta forums and google would only gets you to the DO module that is done by us "ModulesBakery" i had to come here and clarify things up.