Complex sentence: In its infancy, the company ran entirely from geocachers' donations before making its first revenue from sales of 144 geocaching-themed t-shirts, enough to buy the headquarters in Seattle, where they have remained ever since.
Split into simpler sentences: In its infancy, the company ran entirely from geocachers' donations before making its first revenue from sales of 144 geocaching-themed t-shirts. This was enough for Groundspeak to buy the headquarters in Seattle, where they have remained ever since.