When purchasing a private companie, not announcing the terms of the acquisition is just as common as announcing them. Obviously, I don't know the percentage of announced versus unannounced that are successful, though that would be interesting.
It's not only common, but usual that the preliminary report of a "privately" owned aquisition does NOT include purchase price.
First, it is not required by SEC regs and the owners that have sold usually won't approve a press release - (aquisitions require mutual consent on press releases) - that discloses price. The owners may opt to expose it, but they would be opening themselves up to everyone (corporate, investment and personal) knowing how much they are now worth. In most cases, that's not desireable.
PCCC made a good move in acquiring. They have established federal customer list. It looks like PCCC is trying to add on more federal business. Doesn't their new VP of sales have experience with this market? The short term downside is acquisition costs and low margin sales. The long term upside is more value to PCCC as they can show higher sales growth.