With @DdmrDdmr statistic, we can see there are some people who did same thing. But i problem with sending more merit per post. The real concern is merit source send same amount of merit for almost all posts, ignoring the quality or how useful is the post.
As a merit source, I tend to give out a varying amount of merit, depending on a number of factors, including the amount of total sMerit I have to give out, and my mood, but also the effort put into the post, and the importance of the information in the post.
Merit sources should do their best to keep their available source merit close to zero (ie spend all their source merit), and doing so is not always easy if they do not read a lot of good posts. This means they may need to send a lot of merit per post.