It's an offer for a lifetime hitch for a single payment.You know the $15 price for "Lifetime" membership? Is that monthly or a 1 off payment?
As far as I know, $15 works out around £12 at current exchange rate.
I signed on for single years at first,then took the $35 option.
As I have spent more time here,I feel that my payment wasn't enough,so I take to randomly gifting single year hitches in order to offer more support for the place I consider my home.