Originally Posted by
Niwashi
With that pattern, it's ideally towards the end rather than beginning of a billing cycle. Whenever you add a retainer, you pay for it from that day until the end of your current subscription period and the cost is prorated according to how long that is. If you do it the day before your sub expires, it only costs 7 cents and you get it for a day, which should be long enough to log in and switch around what that retainer is holding. That's cheaper than paying $2 for a month or up to $12 for six months if you do it at the beginning of your subscription period (though in the later case, you would have access to him a lot longer of course).