In 02.26 i bought donator status for 25$, i like this dispenser thingy verry much, do i get this donator status forever or just for month like in tf2outpost?

Yes, the donator status is forever, as seen here: http://dispenser.tf/view_contribution/

"Many Thanks for your support to Dispenser.tf. Donation will be mainly used for paying off the cost (such as domain name, server, bot inventory space) and to support long term development of this site. As a gratitude, Donators will have access to the perks as shown by the chart below. The perks are permanent and donation could be made in separate transaction or in mixed method."