If you have money, you may buy merits from buddies. But I think, what it would do? Rather you may try starting good discussions, commenting relevant and quality comments and try to solve the problems people faces in here. That may make you earn merit in a legitimate way.
Precisely, I'm not agreed on buying merit because time to time it will be detected to the mods here to have a suspicious way of getting a merit. Even I stuck to this rank I realized that forgot a merit for a while and continue sharing an idea on this forum, and helping others problem. But lately, I am busy with my real business I temporarily stick on a mega thread to keep active on this form.